Vintage Length Steel Studs Plated steel Made in the USA - not a Genuine Gibson part Qty 2 Mounting studs(U.S. 5/16 - 24) threads Overall Length - 1 1/2" (38.1mm) Threaded section - 15/16" (23.8mm) These are slightly longer than standard Gibson studs. Might require modification to guitar to allow extra length to fit. Fits tailpiece with ears thickness of19/64"(7.65mm) and under(please check before ordering)