Racers can trim even more weight off their mast and boom with new Harken® Carbo® Pivoting Lead Blocks—these high-strength, glass-reinforced composite blocks are up to 25% lighter than the Classic version they replace.

With maximum working loads up to 136 kg (300 lb), they're perfect for sheets and halyards on small boats and control lines on larger boats.

Available in 29mm and 40mm sizes.

Hole spacing and rivet size are the same as Classic models, making upgrades easy.

Cam reverses for either up or down cleating.

High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “head knockers” on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating.

Can be used as becket block.

Sheave Ø (mm)
29 mm

Sheave Ø (in)
1 1/8 in

Length (mm)
100 mm

Length (in)
3 15/16 in

Weight (g)
90.7 g

Weight (oz)
3.2 oz

Maximum line Ø (mm)
6 mm

Maximum line Ø (in)
1/4 in

Maximum working load (kg)
91 kg

Maximum working load (lb)
200 lb

Breaking load (kg)
295 kg

Breaking load (lb)
650 lb

Footnote
Maximum
Maximum working loads and breaking loads for blocks based on cam strengthworking load (kg)s.