REPLACEMENT TIMING PULLEY FOR 3D PRINTER: This high-quality timing pulley set is equipped with a closed-loop, toothed belt measuring 200mm in length and 6mm in width. Featuring a GT2 gear profile with 20 and 60 teeth options, and an 8mm bore diameter, it ensures precise and controlled movement of your 3D printer's print head.COMPATIBILITY WITH STEPPER MOTORS: Designed for use with stepper motors, common in 3D printers for their precise movement control, these synchronous wheels ensure accurate motion translation to the timing belts. This compatibility guarantees your print jobs are executed flawlessly every time.STURDY CONSTRUCTION: Crafted from durable aluminum, this synchronous wheel set is built to last. The robust build maintains precise motion control, minimizing stress on the printer's motors and frame. Ideal for high-performance 3D printing tasks, it ensures longevity and reliability.EASY INSTALLATION: Installing this timing pulley is straightforward with the included hex wrench tool. Simply align the pulley with the motor shaft, tighten the set screws with the provided hex wrench, and ensure everything is firmly secured in place. This quick setup process saves time and effort.VERSATILE APPLICATIONS: Beyond 3D printing, this pulley set is perfect for a range of mechanical tasks, including CNC operations, gear forming, drilling, and lathe machinery. Its reliable performance ensures your projects are executed with precision across various mechanical applications.