1-1/2" X 1-1/2" One-Piece Split Clamp-Type Rigid Shaft Coupling, SteelSpecifications 5L108108 UPC Code: 662786015014 Series: Signature Weight (lb.): 3. 12 Material: Steel Finish: BLACK OXIDE Bore Size (in.): 1 1 2 Screw Size: 1 4 28 x 3 4 Outside Diameter (in.): 2. 375 Mate two shafts with zero backlash Smooth bore protects shafts from damage Superior torque capacity over set screw type couplings Available with straight through or stepped bores Offered in High Strength, Low Profile and Heavy Duty styles Designed for