Overview Reviews Product Description Single groove aluminum sheave for 3L (3/8"), 4L - "A" type (1/2") V-beltsSupplied with 5/16 x 1/2" UNC set screwLight duty applications only*, use cast iron or steel sheaves for harsher environment applications Dynaline Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Dynaline Aluminum Die Cast Sheave 2-1/4 x 3/4" 55407 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *