Models View all Extron Brushless Motor 28xx series| 2808 | 2814 | 2820 | 2826 | 28 369 0 Nema 17 Damper 25 423 0 Bondtech Thumbscrew Assembly 27 507 0 25 mm fan (25 x 25 x10) 45 2799 7 [New] Bondtech Shaft assembly (for BMG, SingleDirect and DualDirect extruders) 21 594 4 Bondtech Motor Gear (for BMG, SingleDirect and DualDirect extruders) 30 918 1