The Altra Industrial Motion Formsprag Clutch&Reg; CL40853-67UPC: 786582295347 | UNSPSC: 26111910 | GTIN:Clutches & Brakes > Mechanical Clutches & Brakes > Mechanical ClutchesFormsprag Clutch® Formchrome® Sprag Clutch, Series: FS-900, 4-1/4 in Bore, 12 in OD, 6. 38 in Overall Length, 18000 ft-lb Torque, 700 rpm Inner/500 rpm Outer Race Maximum, Vertical (Zero-U) Mounting