Item Type: T Slot Router Bit Material: 45 Steel + Tungsten Carbide Uses: Used for carpentry grooving or other carpentry Surface Coating: PTFE Coating Handle Type: Round Shank Approx. 8mm / 0.31in Specifications: Approx. 8 x 28 x 6mm / 0.31 x 1.10 x 0.24in, 8 x 28 x 8mm / 0.31 x 1.10 x 0.31in, 8 x 32 x 6mm / 0.31 x 1.26 x 0.24in, 8 x 32 x 8mm / 0.31 x 1.26 x 0.31in Package List 4 x T Slot Milling Cutter 1. Please avoid cutting metal and non wood materials such as steel, iron and sand.2. The body of the milling cutter is 45 steel, please keep away from water to avoid rust. 145 Steel: Milling cutter is made of robust 45 steel body, with backlash prevention design for maximum strength and durability 2Tungsten Carbide Blade: The tungsten carbide blade can smoothly cut into original materials, resulting in clean, non debris 3Application: This is T slot milling cutter that is very suitable for carpentry grooving or other woodworking 4Wide Applications: Very suitable for arranging installation slots in photo frames, decorative panels and other wall decorations 5Multiple Specifications: The T slot milling cutter has multiple specifications, excellent wear resistance and long lasting performance