It is an extremely lightweight (29g), Gold-plated alu tailpiece. A very high quality of Gold aged finish.
There's no need to replace your current tailpiece studs, the new tailpiece will fit perfectly and provide a tight connection. FABER BRIDGE ABRH, FOR GIBSON® ABR-1, AGED Gold, BRASS SADDLES Gold AGED aber® ABRH Bridge: For Gibson Historic and original ABR-1 (6-32) size bridge posts. Use this ABRH model bridge on your Gibson Historic or any guitar using ABR-1 sized (6-32) bridge posts, including most original tune-o-matic equipped Gibson guitars prior to the introduction of the Nashville bridge. No modifications and nothing else needed!
A direct drop on replacement!