Stanley Chalk Line 30M Blue Chalk & Level | Sta047443 Has a sliding door that allows you to quickly refill the chalk Easy to use and holds up to 100 feet of string High impact ABS case for durability Capacity: Up to 1 oz Made from stainless steel Stanley Chalk Line 30M Blue Chalk & Level | Sta047443 This chalk line has an ergonomic design, with a high impact ABS case for durability. It has on-board hook storage, a crank which folds into case for storage and a sliding door which allows for a 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. Features Accurately measure with this professional chalk line reel leveling kit With storage space for the durable steel end hook Stainless steel end hook for added durability and rust prevention