Genuine Bach BTR finger kick ring with metric lyre screw (4-.07mm tpi), AKA finger pull ring. 1 ring with 4-.07mm nickel screw, fits a lyre holder with 3.8mm opening. Fits many newer imported horns, such as the Bach student BTR, newer Blessing, & others. For an old King (3.8mm) see my item ID# 275364808104 or 275364817258. Contact me if you want to confirm your model's fit. Not for Yamaha.
