About this itemCapacity: Works on spark plug wire diameter from 8.0-8.5mm. Purpose?LY-2048 is designed for use with various types of spark plugs wires and terminals.Application: LY-2048 is a choice for DIY you own ignition cables/spark plug wires, especially for racers and racer shops.Muti Function 2-in-1: Well-polished and black oxide finished jaw prevent rust or corrosion. 2-in-1 function with Strip and Crimp for ease operation.Ergonomic Design?Ratcheting mechanism release after full compression and ensures perfect crimps every time. Two-component PP+TPR material handles features a slip-free grip and secure handle when working, making comfort crimp experience and reduce fatigue.Details: Features:Spark Plug Wire Diameter (mm): 8.5mmCorrosion resistant carbon steel frame with comfort grip handlesTool itself includes Spark Plug Wire Crimping and Stripping FunctionRatcheting mechanism releases after full compression and ensure s perfect crimp every time