2 Pack Flexible Shaft Couplings For 5mm To 8mm Shafts 25mm Length 20mm OD Aluminum Alloy Lead Screw Coupler For 3D Printers And CNC Machines Smooth Transmission And Easy Install On Your Rigs

Aluminum Lead Screw Couplers for 5-8 mm Shafts, 25×20 mm
✔️ 2x aluminum alloy couplers, 25×20 mm, fits 5-8 mm shafts

These two-piece flexible shaft couplings connect 5-8 mm shafts on 3D printers and CNC rigs, delivering smooth transmission and easy install in tight spaces.

✅ Size: 25 x 20 mm (L x OD), 0.98 x 0.79 in
✅ Shaft compatibility: 5-8 mm (0.19-0.31 in) shafts
✅ Material: aluminum alloy for durability
✅ Fixation: 2 screws + 2 set screws for secure grip
✅ Pack: 2 pieces included

💡 What is a flexible shaft coupling used for in hobby CNC machines and 3D printers?

A quick overview: it connects motor output to a lead screw or drive shaft, smoothing motion and tolerating small misalignment for better accuracy.

- transfers torque between shafts with minor misalignment - reduces vibration and backlash for smoother operation - simple installation with two screws and two set screws