ITEM NAME:8mm Handle Slot Milling Cutter Router Bit Wood Cutter Rotary Engraving Tool #gib Store Home Promotion Hot Item Add to Fav.1 X Milling Cutter. Purpose: for wood slotting and trimming. Material: cutting head YG8 primary alloy, cutting body 45# carbon steel, plastic sprayed surface. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.