A time saver! This high quality tool is secured to the front of the receiver by an Allen head screw. A slot, precisely milled in the front of the tool, guarantees the proper positioning of the recoil lug. No more wasted time from having the lug cant to one side as the barrel is tightened into the receiver. Mfg: Kleinendorst SPECS: Aluminum, anodized, matte finish. 8 oz. (227 g). 1-7/8" (4.8cm) long. 11-5/16" (4.9cm) wide, 5/16" (7.9mm) thick. H fits Holland lugs.