Check the listing for details. Dynapar CPL01250500 Flex Shaft Coupling 1/2" PRIMAR 1/2" PRI BORE. Condition: New. Listed at 192.10 USD. Dynapar CPL01250500 Flex Shaft Coupling. Dynapar Couplings, CPL Series Item# CPL01250500 - FLEXIBLE SHAFT COUPLING, 1/2" PRIMAR 1/2" PRI BORE, 1/4,1/2" SEC BORE MEDIUM DUTY, 1.25" DIAMETER CPL Series Information Maximum Mechanical, Thermal, and Electrical Protection for Encoder Shaft Connections Three‑Beam Helical Design Restricts Torque "Windup" Clamp Attachment. No Setscrews to Score or Pit Shafts Full Range of Models Designed To Match Specific Encoders are Supplied with Shaft Size Adaptors Specifications Item Number: CPL01250500 Brand: Dynapar Item Category:Couplings Series: CPL Style: Spring Size: 1/2 Hub A Shaft Size: 1/4 - 1/2 Hub A Material: Cast Aluminum Hub B Material: Cast Aluminum Continuous Torque(lb-in): 75 Duty Rating: Medium Duty H x W x D: 1.2 in x 1.2 in x 1.2 in Net Weight: 1.76 OZ Gross Weight: 2 OZ