- Most useful tool in any mechanic's tool box
- Features a locking device at both ends of the case so leaves can be securely locked in position for use
- Leaves have a special narrow design, permitting checking internal threads in nuts as well as external threads
- Threads per inch 2-1/4, 2-3/8, 2-1/2, 2-5/8, 2-3/4, 2-7/8, 3, 3-1/4, 3-1/2, 4, 4-1/2, 5, 5-1/2, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 24, 28
- WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov
- Quickly determines the pitch of a various threads
