Lightweight Aluminum Tailpiece Studs Nickel plated Aluminum Weight - .19 oz each Set of 2 studs Mounting studs (U.S. SAE 5/16 - 24 threads) Same size as what comes on current Gibson guitars. Fits tailpiece with ears thickness of 5/16" (8mm) and underThese lightweight aluminum tailpiece studs weight less the .2 oz each.Compare these to the weight of steel studs .48 oz and brass studs .55 oz. Aluminum is often said to add increase note and string definition with added presence.

These lightweight aluminum tailpiece studs weight less the .2 oz each.  Compare these to the weight of steel studs .48 oz and brass studs .55 oz.   Aluminum is often said to add increase note and string definition with added presence.