Welcome to Defender Canada! 
Harken Aluminum Mastbase Block - 57 mm (2 1/4") - 1988
$346.55
Harken Aluminum Mastbase Block - 57 mm (2 1/4") - 1988 Item # 1002843
Description
Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.
Specifications:
- Sheave Diameter: 57 mm (2 1/4")
- Length: 81 mm (3 3/16")
- Weight: 6.2 oz (175 g)
- Height Above Track: 33 mm (1 5/16")