Need a solid connection for your shafts? This pack of 5 blue aluminum alloy rigid couplings is just what you need for your DIY projects! They have a 5mm x 8mm internal bore, perfect for connecting two shafts of different sizes or linking a motor shaft (like a stepper motor from a 3D printer) to a lead screw or ball screw. The outer diameter is about 14mm, and they're 25mm long. Made from lightweight yet sturdy aluminum alloy, they're durable and resist corrosion. These are super common in building and repairing CNC routers, milling machines, laser cutters, 3D printers, and all sorts of automated machinery. They provide a fixed, rigid connection to ensure precise power transmission. The set of five gives you spares for multiple projects. A simple, essential hardware component for any maker or machinist's workshop.
