Harken 40mm Carbo Air Triple Swivel Block w/Becket [2641] Boat Outfitting | Trolling Motors The voltage can be adjusted

The voltage can be adjusted over a reasonable range using the front panel controls

Mix only what is needed for application and use within 7 days of mixing or more often with heavy use

Requires 2-1/4" hole

Large Spreader Insert: 2" - 3"

They meet the ABYC H-41 standard for strength: "withstand a load of 400lbs in any direction

Harken 40mm Carbo Air Triple Swivel Block w/Becket [2641] Boat Outfitting | Trolling Motors The voltage can be adjusted40mm Carbo Air Triple Swivel Block with Becket 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)660 kg Maximum working load (lb)1455 lb