![Harken 40mm Carbo Air Double Swivel Block [2638] Boat Outfitting | Gauges UL listed and CSA recognized](https://cdn.shopify.com/s/files/1/0746/2456/5549/files/79734XL.jpg?v=1705818965)
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UL listed and CSA recognized
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ensuring a full 180° of underwater coverage even on boats with deep keels or other underwater protrusions
Harken 40mm Carbo Air Double Swivel Block [2638] Boat Outfitting | Gauges UL listed and CSA recognized40mm Carbo Air Double Swivel Block 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. Specifications: 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 Quick Guide (pdf)