3d printer replacement parts-- 2gt aluminum timing pulley has shiny surface appearance and robust construction, longer working life.. 5mm bore idler pulley-- 2gt timing belt pulley with 5mm bore , 20 teeth.. 3d printer extruder-- gt2 timing belt pulley with 5mm bore , 20 teeth.. Timing belt pulley-- each of the two sides of the wheels were mounted bearings. 3d printer extruders-- -each of the two sides of the wheels were mounted bearings.
