Ramset HammerShot .22 Calibur Powder Actuated Drive Tool with Fasteners -Hammer actuated tool with a barrel design that allows for easy horizontal and overhead fastening -Used for small projects such as fastening two by fours, and furring strips to concrete in basements or room additions -Impact-resistant handle with contoured grip -.22 caliber single shot loads 2,3,4 -Model Number 60707803 -Made in Taiwan -This listing includes a box of 2 1/2 (63mm) low velocity powder fasteners Tested and works well See pictures for details