SureFire 3 Prong Wrench Black. Specifications for SureFire 3 Prong Wrench: Manufacturer: SureFire Fabric/Material: Stainless Steel Caliber: 7.62x51mm NATO 5.56x45mm NATO 6.8mm Remington SPC Color: Black Condition: New Features of SureFire 3 Prong Wrench Constructed from 304 stainless steel for durability Compatible with All SOCOM 5.56 6.8 and 7.62 3-Prong Flash Hiders and WARCOMPS Attaches to 1/2-inch drive ratchet or torque wrench Package Contents: SureFire 3 Prong Wrench SureFire Z-71347: 3 Prong Wrench Black