20Pcs 1/8" Shank 80 Grit Mounted Point Abrasive Cone Shape Sandpaper Deburring Sanding Polishing Flap Wheel Rotary Tool for Grinding and Polishing 3x12mm 20Pcs 3x12mm Grinding Head 80 Grit auspowers_batchfive you can screw the spring

you can screw the spring to the loosest position firstly and then tighten it when the filament is inserted

0002" Concentricity 5000 Max RPM 12-28 NF Drawbar Thread Hardened to 61-65 Rockwell Features High quality triple bearing design (bearings are immersed & sealed) Made of precision ground hardened steel for high accuracy Great for high speed turning

If a single control module

UV protectant resists becoming brittle

20Pcs 1/8" Shank 80 Grit Mounted Point Abrasive Cone Shape Sandpaper Deburring Sanding Polishing Flap Wheel Rotary Tool for Grinding and Polishing 3x12mm 20Pcs 3x12mm Grinding Head 80 Grit auspowers_batchfive you can screw the spring20Pcs 1 8" Shank 80 Grit Mounted Point Abrasive Cone Shape Sandpaper Deburring Sanding Polishing Flap Wheel Rotary Tool for Grinding and Polishing 3x12mm Product Features SIZE: 20Pcs Cone Flap Wheel. Shank Diameter x Head Diameter x Length : 3x12x55mm ; Grit: 80#; 1 8" Shank FUNCTION: These Cone Shape Abrasive Sandpaper Particularly applicable for grinding and polishing on surface and side face,Groove, gap, corner PREMIUM MATERIALS: High quality