Accommodates Taps and Dies from #4 - 1/2 & 3-12mm. Tap Holders tilt down for easy access keeping taps secure and organized. Set includes: 3881 Tap and Die Ratcheting "T" Wrench; 3882 Small Tap Adapter; 3883 Medium Tap Adapter; 3884 Die Adapter; Sliding "T" for adapters, 34 taps; 34 dies; SAE screw pitch gauge; Metric screw pitch gauge; #5 screwdriver.