Zeberoxyz 2PCS 10mm to 10mm Aluminium Plum Flexible Shaft Coupling Diameter25mm Length30mm 10x10mm Motor Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor（10x10mm）

They fit well and felt good and sturdy.

Much better than the style that came on my machine.

Fit perfectly got my CNC RUNNING again without any issues.

The Zeberoxyz 2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling provides a reliable and high-quality solution for connecting different components in various applications, such as 3D printers, CNC machines, and servo stepped motors. One of the notable features of these couplings is their build quality. They are designed to offer a secure and flexible connection between shafts of different diameters, ensuring that power and motion are efficiently transmitted between components. The use of aluminum adds to their durability and reliability. These couplings are comparable to many similar products in the market, offering a dependable solution at a competitive price point. They serve their purpose effectively and are a practical choice for those in need of flexible couplers for their projects. In summary, the Zeberoxyz 2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling is a reliable and cost-effective option for connecting shafts in various applications. Their good quality and competitive pricing make them a valuable addition to your toolkit.

The 5mm motor shaft, and 8mm lead screw holes in these couplers are bored too large -- and the aluminum casting isn't flexible enough to tighten down the coupler onto the shafts without an *incredible* amount of torque on the included hex wrench. Won't be buying this brand again.