12Mm To 12Mm Bore Rigid Aluminum Shaft Coupler With Set Screws, 25Mm Length, 16Mm Outside Diameter, M4 Screws Included, Black Shaft Connector For 3D Printers, Stepper Motors, CNC Machines, DIY Robots

Rigid 12mm-12mm Aluminum Shaft Coupler, 25mm Length
✔️ 12mm bore to 12mm bore, 16mm OD, 25mm length, M4 screws

This rigid aluminum shaft coupler connects 12mm shafts in compact drive setups. It’s ideal for 3D printers, CNC machines, stepper motors, and DIY robots where strong, precise torque transfer is needed.

✅ Material: Black anodized aluminum body for rigidity
✅ Bore/Size: 12 mm to 12 mm bore, 16 mm outer diameter, 25 mm length
✅ Screws Included: M4 set screws included for secure clamping
✅ Mounting: 2- or 4-screw top-tight design to minimize eccentricity
✅ Applications: For 3D printers, CNC machines, stepper motors, DIY robots

💡 What is a rigid shaft coupler used for in 3D printers and CNC machines? A handy piece that locks two shafts for precise torque transfer. - Reduces backlash in drive trains - Keeps shafts aligned under load - Works with 12 mm shafts and M4 screws