Genuine Yamaha finger kick ring with metric lyre screw (4-.07mm tpi), AKA finger pull ring.  1 ring with 4-.07mm silver-plate screw, fits a lyre holder with 11/64-3/16 (4.5mm) opening.  Fits many newer imported horns, such as the Bach student BTR, newer Blessing, Etude, & others.  To fat for an old King, see my item ID# 275364808104 or 275364817258.  See my item ID# 276268660363 for this item in Nickel.  Contact me if you want to confirm your model's fit, there are many.