Narrow designed blades permit use for internal and external screw threads
Locking device at each end to secure all blades for storage or position
Correct pitch is determined by matching blade teeth with threads
Precisely ground and finished
Blades marked with thread size
*Image shown for representational purposes only
California Residents Proposition 65 WARNING: This product can potentially expose you to chemicals including Chronium, Lead and Nickel which are known to the State of California to cause cancer, birth defects or other reproductive harm.