Harken Bosun's Chair, 2234 Blocks_Carbo Air Blocks Use cam swivel bases when

Use cam swivel bases when leads must rotate to face the trimmer

The Harken 40mm Carbo Air® Single Block includes an integral becket that allows either a 2:1 or 3:1 purchase

Micro block sheaves run exclusively on ball-bearing systems for fast trim and release under any load

The 442 uses a spacer and the 404 uses an O-ring to keep the line in the sheave during intermittent loading

Harken Bosun's Chair, 2234 Blocks_Carbo Air Blocks Use cam swivel bases whenA strong and well designed chair, made in the USA. Harken's chair is made from heavy duty 1680 denier ballistic nylon canvas chair features a wide plywood seat padded with 1" thick foam for a comfortable and secure platform aloft. The low halyard attachment allows maximum height when working at the masthead. Other features include an adjustable back support, wide mouth pockets, and a D ring on each side to attach heavy tools. Total weight (including