Looking for a specific timing belt for a project? This is an HTD3M belt, which means it has a 3mm pitch (that's the distance between the teeth). The one listed here is 168mm long and 6mm wide. It's a toothed, synchronous belt, so it won't slip – perfect for precise motion in things like 3D printers (like the X or Y axis), CNC machines, small robotics, or any drive system that uses matching pulleys. The belt is 2.4mm thick with a tooth height of 1.17mm. Made from durable, flexible material that can handle tension. Just make sure the length (168mm is the *pitch* length, which is the length measured along the pitch line of the teeth) and width (6mm) match what your machine needs. A reliable component for DIY makers and tinkerers.