Youmile 5 Pcs Flexible Couplings 5mm to 8mm Aluminum Alloy Shaft Coupling Flexible Coupler for 3D Printer/CNC Machine with Allen Wrench

• 1.Flex capability of the coupler removes stress when shafts are not aligned perfectly.
• 2.Flexible shaft couplers used in 3D printers such as RepRap Prusa i3 and small CNC machines.
• 3.Exquisite workmanship, bright appearance, good toughness.
• Compatible with NEMA 17 stepper motors (for 5mm to 8mm shaft diameter).
• Flexible Shaft Couplers:5x8x25mm / 0.20 x 0.31 x 0.98"

Features: 1.Flex capability of the coupler removes stress when shafts are not aligned perfectly. 2.Flexible shaft couplers used in 3D printers such as RepRap Prusa i3 and small CNC machines. 3.Exquisite workmanship, bright appearance, good toughness. Specification: Material: Aluminum Alloy Coupler Height(L): 25 mm/0.98" Coupler Diameter: 19 mm/0.75" Top Shaft Diameter: 5mm/0.19" Bottom Shaft Diameter: 8mm/0.31" Screws Position: 4mm/0.16" Flexible Shaft Couplers 5x8x25mm / 0.19 x 0.31 x 0.98" Package Included: 5 x Flexible Couplings 2 x M3 Allen Wrench