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The Altra Industrial Motion Formsprag Clutch&Reg; CL42154-8MUPC: 786582309198 | UNSPSC: 26111910 | GTIN:Clutches & Brakes > Mechanical Clutches & Brakes > Mechanical ClutchesFormsprag Clutch® Formchrome® Sprag Clutch, Series: FSO-500, 1-1/8 in Bore, 4. 248 in OD, 3-1/2 in Overall Length, 1175 ft-lb Torque, 2500 rpm Inner/800 rpm Outer Race Maximum, Vertical (Zero-U) Mounting