Harken 40mm Twing Block 2699

A first! The new Carbo Twing block features a spring loaded top opening mechanism so you can pop it on or off the sheet very quickly whenever the breeze dictates. Carbo side plates and sheave give it the toughness to survive impact as you pull it down tight to the deck.
 
Sheave diameter: 40 mm
Max line: 10 mm
Maximum working load: 275 kg
Breaking load: 825 kg