SK-7058 3 Series Stand up block with square base.


Stand up spring block with Stainless Steel cheeks.  Square base matches Schaefer 3 series stand up blocks built in the 1970's and 80's.  Delrin(tm) sheave ensures smooth operation and high safe working load.  Sheave Dia.1-7/16" (37 mm), Max Line 7/16" (11 mm), Base width 1-3/4" (44mm), Height 3-17/32" (89 mm), Bearing Height 2" (51 mm), Fastener Size (4), #10 RH (5 mm), C/C 1-1/16" (26 mm), SWL 1000lbs (450 kg), Weight Stain. 3.5 oz (99 g)

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.

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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