About This

• Clear Markings: Every individual blade is stamped with the corresponding thread size for quick, error-free identification.
• Versatile Design: The narrow blade design permits use for checking both internal and external screw threads.
• Durability: Blades are made from high-quality steel, hardened and tempered to ensure long-term dimensional stability and resistance to wear in demanding shop environments.
• Locking Mechanism: Each end of the case features a locking device to secure the entire set for storage or to hold a single blade firmly in position during use.
• Made in USA: Manufactured by PEC Tools in the USA, ensuring the highest standards of precision and quality for professional machinists and mechanics.