This is an OP20 CL50 switch

Does this unit include the spring

this aluminum body gas valve offers superior corrosion resistance and long-term durability in demanding industrial environments

ensuring a direct fit within high-tolerance blower housings

For low-loss disconnection

Browning AK46X7/8 Sheave 323080-701 This is an OP20 CL50The Browning AK46X7 8 Sheave is a precision engineered single groove cast iron pulley designed for high performance power transmission in commercial HVACR systems. Featuring a 4. 45" outside diameter and a 7 8" fixed bore, this component is manufactured with high grade gray cast iron for superior durability and vibration dampening. This sheave is optimized for use with 3L, 4L, and A sectional belts, ensuring a precise fit and maximum torque transfer.