Item Type: Milling Cutter Model: WX01240PCTZ03 Material:High Speed Steel Shank Diameter: 1/8in (3.175mm) Total Length: Approx. 38mm / 1.5in (Manual measurement causes error within 1 to 3mm) Specification: 10 x 0.8-3.0mm PCB Milling Bit 10 x 30x0.1mm Engraving Bit 10 x 3.175x17mm Flat End Mill 10 x 3.175x17mm Ball Nose Mill Package List 40 x Milling Cutter Has 13mm error due to manual measurement. Due to the difference between different monitors, there is a certain colour difference between the picture and the real object. 140Pcs Router Bit: There are 4 kinds of milling cutters, and each type had 10pcs, meeting your various cutting needs. 2Many Advantages: Comes with high hardness, good wear resistance, great strength, incisive edges, flutes and so on. 3High Speed Steel: Forged with high speed steel material, which enables high efficiency in milling and cutting as well. 4Wide Application: Can be used in accuracy processing components such as SMT, mould, plastic, carbon fibre, wood, etc. 5Practical Using: Also allows for using in conjunction with 1610, 3018, 3018pro and other excavators, very practical.