"REDHEAD" RAMGUARD PIN.300 Head. Qty 100. Fits Ramset, Hilti, Remington & most powder actuated tools. That use 22cal. Single shots, 27cal.10shot strips. And 25cal. Discs. Box of 100 Ramset 1516E ACQ Treated Nails. 2.5" Ramguard Drive Pin Designed for use in concrete and structural steel applications.