Our new UL-DH-1 lug is tall and may be cut down, ideal for supporting a sling swivel, barrel pin, or slot it for a tiny wedge key. Milled steel, the dovetail is 0.500" long, by 0.46" wide. The base is .050" thick, ideal for thin wall barrels. The blade is 0.075" thick and stands 0.285" above the base. Most rifles will use three underlugs, while barrels longer than 42" use four. Made in the U.S.A.