Single Aluminum Block 504-05


Single block with anodized aluminum cheeks. Delrin(tm) sheave ensures smooth operation with high safe working load. Swivel head may be locked in place to avoid twist. Sheave Dia. 2" (51mm), Thickness 15/16" (24mm), Width 2 1/8" (54mm), Length 4 13/32" (112mm), SWL 1750 lbs. (795kg), Weight 5oz. (142g), Max Line size 7/16" (11mm)

Schaefer Marine, Inc. warrants its standard catalog products to be free from factory defects in material and workmanship for a period of ten (10) years from the date of purchase, unless otherwise stated in this catalog or any other Schaefer Marine catalog. * Furling, Tuff Luff, and Windlass products have shorter warranties and are shown per product.

We offer free shipping on orders over $100. All other orders are shipped via UPS. For orders outside of the U.S., contact our sales team for custom quote:

Fitting products to your boat is not one size fits all, feel free to reach out to our team for assistance at 508-995-9511 or