Max Motosports Electric PTO Clutch for John Deere Scotts Warner 5219-20 GY20108 GY21340 GY20878 Mower Lawn Tractor - Upgraded Bearings Stainless steel brake rivets for a long and safe service life Full Control of Clutch Engagement Simplified No Linkage Design SPEC: 1.00" Crankshaft, 6.150" Pulley, Counter Clockwise, 5/8" Belt, 105 lb.ft torque Fits: Warner 5219-20