1/2" X 1/2" Two-Piece Split Clamp-Type Rigid Shaft Coupling/Keyways, SSMate two shafts with zero backlash Keyways provide added torque capacity and fixed shaft phasing Two pieces for convenient assembly and adjustment Available with straight through or stepped bores Offered in High Strength and Low Profile styles Designed for aligned shafts, the 2 Piece Clamp Type Coupling makes two shafts function as one. This coupling comes completely apart to allow the most convenient assembly and adjustment. Standard keyways provide