Size: 5pcs Flexible Couplings with 5 mm to 5 mm ( 0.19 to 0.19 inch).
Dimensions: 25 mm x 19 mm (H x Dia. )
Material: Made of high quality Aluminum Alloy with Oxidation treatment. High durability and stability
Stable Operation: Flexibility of this couple removes stress between motor and driving component
Easy to Use: Flexible Couplings with simple structure which provides cushioning and shock absorption. Easy to disassemble and install
3D Printer Parts: Useful in RepRap 3D Printers and small CNC machines, compatible with NEMA 17 stepper motors (for 5 mm shaft diameter)