These nozzle drill cleaners are powerful tools that any 3D printer owner must have.As blocks happen a lot during the printing, nozzles must be cleaned to ensure flowing printing.These drills are made of tungsten steel, hard and thin enough to get into the nozzle and extract the blocked filament.Type: Nozzle Cleaning Drill BitMaterial: Tungsten SteelQuantity: 10 Pcs/SetFixing Ring Color: RandomFeatures: High Hardness, Durable, 3D Printer Nozzle CleanerTotal Length: 38mm/1.50" (Approx.)Shank Diameter: 3.175mm/0.13" (Approx.)Size: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm (Approx.)[1 Mixed Sizes] Includes: 1pc 0.1mm, 1pc 0.2mm, 1pc 0.3mm, 1pc 0.4mm, 1pc 0.5mm, 1pc 0.6mm, 1pc 0.7mm, 1pc 0.8mm, 1pc 0.9mm, 1pc 1.0mm Nozzle Cleaning Drill Bits[2 Mixed Sizes] Includes: 2pcs 0.2mm, 2pcs 0.3mm, 2pcs 0.4mm, 2pcs 0.5mm, 2pcs 0.6 Nozzle Cleaning Drill BitsNotes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:10 x Nozzle Cleaning Drill Bits with a Storage Box