40mm Pivoting Lead Block with Cam-Matic® cleat

Harken 40mm Pivoting Lead Block with integrated reversible cam cleat to allow many mounting options and sheeting angles.

High-strength pivoting lead blocks with cams for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Cam reverses for either up or down cleating.

Big Bullet blocks can be used as main or jib sheet blocks on dinghies, or for control line applications, such as travelers, cunninghams or boom vangs on offshore boats. Low-friction Big Bullet Blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. Delrin sheave and ball bearings. Cheek material constructed from reinforced plastic with stainless steel straps. Where applicable, blocks use #10 fasteners.

Key Features 

• Use as lead blocks for halyard controls 
• Delrin® ball bearings
• Lead control lines aft
• Hardkote-anodized Teflon impregnated aluminum sheaves
• Sheave Diameter: 1 9/16″ (40 mm) 
• Max. Line Diameter: 3/8″ (10 mm)  
• Max. Working Load (MWL): 300 lb. (136 kg)  
• Breaking Load: 950 lb. (430 kg)   
• Weight: 6.6 oz. (186 g) 
• Length: 4 1/2″ (112 mm)