Timing Pulley, High Quality Aluminum Smoothly 2GT 6mm/10mm Wide Belt Pulley 16T/20T 3mm/5mm Bore 3D Printer Accessary 5pcs/Set(W6mm 20T 5 Toothless)

[High Quality] Adopt high quality aluminum, excellently machined, finished smoothly. [Toothed or Toothless] There are toothed or toothless 2GT timing pulleys in different sizes that you can choose. [5pcs] Comes total 5pcs belt pulleys in one bag which you may use for many projects. [Ideal Choice] Perfect choice for building a 3D printer or similar projects. [Good Replacement] They are good replacement parts for old or broken 3D printer belt pulley.