Spindle Assembly for MTD,Cub Cadet 618-04124,918-04124 (pulley not included) Quality Aftermarket Spindle Assembly Replace MTD,Cub Cadet,618-04124(A-C),918-04123(A-C) Pulley 6-1/2" O.D x 1" HT, Overall Length 6-1/2" Round hole blade adaptor Mounting holes are not threaded, use self tapping screws.