Ask a QuestionSpecification: Material: Cemented Carbide (Tungsten Steel)Total Length: Approx. 37mm Shank Diameter: Approx. 3.175mm Blade Diameter: Approx. 0.5mm Blade Length: Approx. 1.8mmProcessing Range: PCB, SMT, CNC, mold, plasticAsk a QuestionFunction:Engraving Drill/Burr (Carbide Titanium Drill Bit)Carbide rods and tungsten steel. With high wear resistance. High strength and hardness. Bending resistance, prevent disturbance. Robust and practical. Easy to use. to use. Titanium coated, improves the speed and feed rate of the tool. Package Included: 10 x CuttersNote: Please allow 1-3mm errors due to manual measurement. The item color displayed in photos may be showing slightly different on your computer monitor because monitors are not calibrated same. Payment1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow.2) payment must be made within 3 days of placing the order.3) if you are unable to check out immediately after the listing ends, please wait a few minutes and try again, payments must be completed within 3 days. Shipping1.