This 100ft Extra Bold Large Capacity Chalk Reel provides you with the most durable and best performing large capacity chalk line reel. The planetary gear system provides you with a long lasting gear life. For added productivity, our chalk line tool features 4X faster gear retraction allowing you to quickly mark multiple lines. The chalk string marks with an extra bold line giving you maximum visibility. A 18 oz capacity allows you to mark more lines between refills while an extra-large quick turn opening makes those refills easy.