Roughneck® Chalk Line is packed full of features for the toughest environments. A strong, impact-resistant, double-injected case provides outstanding protection and durability. An innovative handle drive release mechanism prevents handle rotation when drawing line. Super-fast 6:1 gear ratio for swift rewind. Complete with a 224g (8oz) bottle of blue chalk, ideal for use on plasterboard, brick, concrete and wood. Ref: UTTK3740