brand new and high quality Material: Tungsten Steel (Drill)+Stainless Steel (Handle) Color: See Pictures These extruder nozzle drill cleaners are powerful tools that any proprietary 3D printer should have As blocks happen much during printing, extruder nozzles must be cleaned from for time to for time to ensure that print runs and will difficulty to gain access to the interior of the nozzle These drill detergents are here to help The drills are made of steel Tungsten, hard and thin enough to get into the nozzle and pull the stuck strand There are 4 kinds of tips 0.2mm, 0.3mm, 0.4mm and 0.5mm suitable for extruder printer Please note that the rubber band color on cleaner drill is random With these precision drill bits, you will definitely extend the life of your nipple to maintain the production of the best models Shank Diameter: 3.175 mm Overall length: 38.1 mm Four specifications: 0.2/0.3/0.4/0.5mm Quantity: 10 Pcs Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 10 Pcs x 3D Nozzle Cleaning Tool 0.2/0.3/0.4/0.5mm Drill Bit For Extruder Printer