1 pcs 608 2RS bearing ABS Finament 4 pcs screw bolt-nut 3mm, 20mm length 4 pcs L bolt-nut 3mm, 35mm length 1 pcs Spring 12mm diameter, 30mm length 1 pcs Bowden 4mm 1 pcs Name 17 Stepper Motor 1 pcs Extruder Gear, direct type Be aware to cut the bolt a little, to make it percission.