Stanley chalk line 30m blue chalk level stanley 0 47 443 this chalk line has an ergonomic design with a high impact abs case for durability it has an on board hook storage a crank which folds into case for storage and a sliding door which allows for quick and easy refill 30g chalk capacity it has a stainless steel end hook for added durability and rust prevention and can hold 30m of string li supplied with 113g blue chalk and line level stanley 0 47 443 chalk line 30m blue chalk l