Harken 40mm Double Block — Swivel, Becket RHKYC-Branded Rowing & Paddling Clothing Shallow bow shackles are proportionally

Shallow bow shackles are proportionally wider for their length than regular bow shackles

25 in (57 mm) blocks are compact and lightweight

Length (mm)157 mm

Length (mm)94 mm

Weight (oz)6 oz

Harken 40mm Double Block — Swivel, Becket RHKYC-Branded Rowing & Paddling Clothing Shallow bow shackles are proportionallyPart No. 2639 Sheave (mm)40 mm Sheave (in)1 9 16 in Maximum line (mm)10 mm Maximum line (in)3 8 in Maximum working load (kg)440 kg Maximum working load (lb)970 lb Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.