Go Back A Groove Pulleys Item: CA0150X050 Zinc Die Cast Pulleys are non-corrosive, non-toxic, spark-free and impact resistant. Available with or without keyway, furnished with socket head set screws. Strong-Rugged built to last! Request Information Spec Measure Bore Size1/2 OD1 1/2 Pitch Dia.1 1/4 L1 1/16 G5/8 C7/16 TypeSolid KeywayNo Keyway Set Screw Size5/16-18 Weight0.18 4L Belt Max Pitch Dia.3.10 4L Belt Min Pitch Dia.2.10 4L Belt Turn Open0.00 4L Belt Turns Open7.00 5L Belt Max Pitch Dia.3.20 5L Belt Min Pitch Dia.2.40 5L Belt Turn Open2.00 5L Belt Turns Open9.00 G Min0.469 G Max0.875 Style1