Step Drill 4.76-12.7mm 4241 HSS Step Drill Bit Pagoda Drill Drilling Tool

Feature: *The compact set replaces 6 individual drill bits. *Two-flute design for faster smoother cutting. *Suitable for workpieces with hardness below 25° such as iron plate steel plate PV plate and insulation plate. *Use tools: both pistol drill and bench drill. *Note: Water cooling while working can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400 rpm! Specifications: Product Name: Step Drill Bit Material: 4241 High speed steel Color: Gold Silver 3/16-1/2 Six step bit: 3/16 1/4 5/16 3/8 7/16 1/2 Suitable for: iron plate steel plate PV plate and insulation plate. Quantity: 1pc Package Included: 1 × Step Drill Bit Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.