Series 40 All-Purpose Stand-Up Block. Ronstan's 40mm plain bearing blocks are strong and compact. Smart features include a unique captive lock universal head. For dinghies and keelboats up to 26'. 1 9/16" (40mm) sheave is made from UV-stabilized acetal and accepts a line size of 7/16" (11mm). Cheek is made from stainless steel and fiber-reinforced textured Zytel. Mount type: Mechanical fasteners.
7/16 Inch or 11 mm
No Integral Cleat
Safe Working Load
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