Harken 40 mm Zircon Block 2190

Zircon blocks from Harken boast high performance due to the presence of industrial ceramic ball bearings that are securely mounted within caged races. These cages ensure that the bearings remain separated and do not come into contact with each other, resulting in excellent efficiency for small boat blocks.

• Length 2-3/8"
• Sheave dia 40 mm
• Length 60 mm
• Weight 22.9 g
• Maximum line 8 mm
• Maximum working load 115 kg (250 lb)
• Breaking load 340 kg (750 lb)