WINOMO Nema 17 Stepper Motor Mounting Bracket w/ M3 Screws 2 Pack The item includs two Pack of NEMA 17 Stepper Motor Brackets - Ideal for many hobby and replacement applications. M3 Screws Included (8) Two Pack - NEMA 17 Mounting Bracket - 90 degrees Mounting Holes: 31mm center-to-center Max Collar Diameter: 22mm Powder-coated steel