Features and Benefits:�Includes standard line level and var-pitch line level�Unbendable open hooks allow level to slide freely�Pocket clip will guard tool against loss�Use for landscaping, plumbing, masonry work, gutters, and sheet metal workHandy line level set includes a standard line and a var-pitch line level. Both feature large acrylic vial and open end hooks for easy sliding on string. The exclusive var-pitch line level is ideal when establishing slope or pitch when landscaping, concrete, gutters, inc.