M661 Drive Arm$41.00 Replacement drive arm for our M661. Connects with a drive spring to the reel. M661 Drive Arm quantity Add to cart Description Description Small drive arm (drive rod), for our M661. Connects to the reel using the DS21 Drive Spring. Part no. M661-1100 Related products Switch Cover $27.00 Add to cart Revolving Arm for M661 $132.00 Add to cart Bushings for Sled Style Cable Machines $52.00 Add to cart Revolving Arm for M81, M844, M98 $308.00 Add to cart M81 Complete Gearbox $1,107.00 Add to cart