![Harken 57mm Carbo Quad Block - Swivel [2631] Marine Hardware | Gas Springs 18](https://cdn.shopify.com/s/files/1/0769/5908/8945/files/88766XL.jpg?v=1748386694)
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
18" (30 mm) in diameter
Use caution if setting the thermostat above 120 degrees as scalding can easily occur
Adjustable for boats with 1” to 2-1/2” gunnel thickness
Double Ball Mount with Two 1
9 Amp hour current capacity
Harken 57mm Carbo Quad Block - Swivel [2631] Marine Hardware | Gas Springs 18" (30 mm) in diameter57mm Carbo Quad Block Swivel Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 3 8 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb