Description Cylinder stop set For 1-1/8" shaft Qty: (1 pc) 2 pcs of 1" Block. 1 Pc of 1-1/4" 1-1/2" and 1-3/4 Block. Replaces 639076 and 9110 Monarch. This item is a suitable alternative for the following: 952-CST118P, 9110, 873-CST118P, 639076