Remington 476 Powder Actuated Hammer Fastener
Product Description: Powder actuated fastening hammer designed for the do-it-yourselfer.
The strike of a hammer will actuate and fire a pin into concrete, steel or masonry.
Ideal for mounting framing lumber, electrical junction boxes, conduit clips, & more.
Uses .22 caliber low velocity power loads to fasten up to 2-1/2" power fasteners
These are brand new but came packed to us in Bulk boxes of 12, there is no instructions packed with these.