Rotary 9372 Ring Klips - (Pack of 2) Set of 2 Rotary Ring Klips. AYP, ROPER, SEARS: 12000029 and 812000029. Fits King Pin on 16, 18 and 20HP Garden Tractors from 1991 to Present. Also used to retain Steering Bell Crank Assy on 16HP Garden Tractors and to retain Sector on 18 and 20HP Models. Fits 3/4" axle shafts.