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100mm Hi-load
Fixed Mastbase Block


Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Flared cheeks prevent chafe on the halyards. High-load bearing system has Teflon® composite bushing, sideload balls. Hardkote-anodized aluminum sheave for additional strength.

Harken 102 mm Aluminum Mastbase Block
#HAR3123 List Price $473.00Only $416.24