FITMENT: 1)522 – Suitable for using on any cap screw up to 1/2 inch diameter. 2)7393 – Perfect for removing timing gears, fan pulleys, harmonic balancers, and many other parts having tapped holes. FEATURES: 1）Replace OEM– Quality replacement for OTC p/n 522 and 7393. 2）Benefits– The sturdy steel design ensures long-lasting performance. Damage-free pulling. Ideal for servicing off-road construction equipment and machinery. .