Power Winder 30m Kit. Stainless steel hook for added durability and rust prevention. Ergonomic design, holds 30m of string. 45gr chalk capacity. Weight and style combination provides plumb bob facility. High impact case for durability. 3.5 to 1 gear ratio for faster rewind. Metal crank folds into the case for storage.Supplied with 113grm blue chalk and line level.