This IRWIN Large Adjustable Tap Wrench is a must-have for any mechanic or DIY enthusiast. The 20" long wrench features 6 taps and is perfect for threading and tightening in automotive applications. Made by the trusted brand IRWIN, this wrench is built to last and will provide reliable performance for years to come. Whether you're a professional mechanic or just a weekend warrior, this tap wrench is sure to be a valuable addition to your tool collection. M20X2.5, M16X2.0, M16X1.5, HELI-COIL 5/8X11 STI NC, HELI-COIL 1/2X13,STI NC 5/8X11 NC 3/8X18 NPT