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A utility tool comprising a body having a first end and a second end positioned on opposite ends of the body; a removable device; as well as a first tool and a second tool configured to be selectively coupled to each other or one of either the first end and second end of the body.

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1. A removable blade cartridge in combination with a corresponding blade cartridge bay, the blade cartridge comprising: a. a removable blade cartridge body having a recess slot within and a knife slot in communication with the recess slot;b. a knife blade positionable within the recess slot and conf

1. A removable blade cartridge in combination with a corresponding blade cartridge bay, the blade cartridge comprising: a. a removable blade cartridge body having a recess slot within and a knife slot in communication with the recess slot;b. a knife blade positionable within the recess slot and configured to slidably move between an open position and a closed position; andc. a guide assembly coupled with the knife blade, wherein the guide assembly drives the knife blade between the closed position and the open position, wherein the knife blade is restricted from moving to the open position when the blade cartridge is outside of the blade cartridge bay, and wherein the blade cartridge bay comprises a biasing member which couples with the guide assembly when the blade cartridge body is positioned within the blade cartridge bay, and further wherein the knife blade is always biased towards a retracted position by the biasing member when the blade cartridge body is positioned within the blade cartridge bay. 2. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 1 further comprising an engaging mechanism which is engaged when the blade cartridge body is positioned within the blade cartridge bay and disengaged when the blade cartridge body is outside of the blade cartridge bay. 3. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 1 further comprising a leaf member for engaging and disengaging the blade cartridge to the blade cartridge bay. 4. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 1 wherein the blade cartridge body further comprises: a. a first blade member; andb. a second blade member in communication and positioned substantially parallel to the first blade member, wherein the recess slot is located between the first blade member and the second blade member, the blade cartridge body including a thin film of material configured over the knife slot such that the knife blade pierces the thin film when moving initially from the closed position to the open position. 5. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 1 wherein the biasing member comprises a guide spring, wherein the guide spring urges the knife blade to retract to the retracted position. 6. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 1 wherein the knife blade is moveable between the closed position to the open position only when the blade cartridge is engaged within the blade cartridge bay. 7. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 6 further comprising a safety spring for applying a first force to the guide assembly when the blade cartridge is disengaged from the blade cartridge bay, wherein the knife blade is prevented from moving when the first force is applied to the guide assembly. 8. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 6 further comprising a thin rib coupled to the blade cartridge body for informing a user of prior use of the knife blade. 9. A removable blade cartridge in combination with a corresponding blade cartridge bay, the blade cartridge comprising: a. a blade cartridge body having a recess slot within and a knife slot in communication with the recess slot, the removable blade cartridge body further comprising an engaging mechanism which is engaged when the blade cartridge body is positioned within the blade cartridge bay and disengaged when the blade cartridge body is outside of the blade cartridge bay;b. a knife blade positionable within the recess slot and configured to slidably move between an open position and a closed position; andc. a guide assembly coupled with the knife blade, wherein the guide assembly drives the knife blade between the closed position and the open position, wherein the blade cartridge bay comprises a biasing member which couples with the guide assembly when the blade cartridge body is positioned within the blade cartridge bay, and further wherein the knife blade is always biased towards a retracted position by the biasing member when the blade cartridge body is positioned within the blade cartridge bay. 10. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 further comprising a leaf member for engaging and disengaging the blade cartridge to the blade cartridge bay. 11. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 wherein the blade cartridge body further comprises: a. a first blade member; andb. a second blade member in communication and positioned substantially parallel to the first blade member, wherein the recess slot is located between the first blade member and the second blade member, the blade cartridge body including a thin film of material configured over the knife slot such that the knife blade pierces the thin film when moving initially from the closed position to the open position. 12. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 wherein the biasing member comprises a guide spring, wherein the guide spring urges the knife blade to retract to the retracted position. 13. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 wherein the knife blade is moveable between the closed position to the open position only when the blade cartridge is engaged within the blade cartridge bay. 14. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 13 further comprising a safety spring for applying a first force to the guide assembly when the blade cartridge is disengaged from the blade cartridge bay, wherein the knife blade is prevented from moving when the first force is applied to the guide assembly. 15. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 wherein the guide assembly further comprises a knife switch coupled to the knife blade. 16. The removable blade cartridge in combination with a corresponding blade cartridge bay of claim 9 further comprising a thin rib coupled to the blade cartridge body for informing a user of prior use of the knife blade. 17. A removable blade cartridge in combination with a corresponding blade cartridge bay, the blade cartridge comprising: a. a blade cartridge body having a recess slot within and a knife slot in communication with the recess slot, the removable blade cartridge body further comprising an engaging mechanism which is engaged when the blade cartridge body is positioned within the blade cartridge bay and disengaged when the blade cartridge body is outside of the blade cartridge bay;b. a knife blade positionable within the recess slot and configured to slidably move between an open position and a closed position;c. a guide assembly coupled with the knife blade, wherein the guide assembly drives the knife blade between the closed position and the open position andd. a safety spring for applying a first force to the guide assembly when the blade cartridge is disengaged from the blade cartridge bay, wherein the knife blade is prevented from moving when the first force is applied to the guide assembly. 18. A removable blade cartridge in combination with a corresponding blade cartridge bay, the blade cartridge comprising: a. a blade cartridge body having a recess slot within and a knife slot in communication with the recess slot, the removable blade cartridge body further comprising an engaging mechanism which is engaged when the blade cartridge body is positioned within the blade cartridge bay and disengaged when the blade cartridge body is outside of the blade cartridge bay;b. a knife blade positionable within the recess slot and configured to slidably move between an open position and a closed position;c. a guide assembly coupled with the knife blade, wherein the guide assembly drives the knife blade between the closed position and the open position; andd. a thin rib coupled to the blade cartridge body for informing a user of prior use of the knife blade.