Harken 57mm Carbo Cheek Block Ai_Description and 2614 have on/off switches

and 2614 have on/off switches

Sheave  38 mm Length  57 mm Weight  92 g Fasteners  5 RH mm Maximum Line  10 mm  Maximum Working Load  272  kg Breaking Load  907 kg

Sheave 40 mm Length  70 mm Weight  44 g Maximum Line  10 mm  Maximum Working Load  220 kg Breaking Load  735 kg

Cheek blocks are designed to be fixed to a flat surface

and other attachments remain firmly in place even under dynamic conditions

Harken 57mm Carbo Cheek Block Ai_Description and 2614 have on/off switchesLow 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. Sheave 57 mm Length 92 mm Weight 68 g Maximum Line 10 mm Maximum Working Load 359 kg Breaking Load 1079 kg