Zeelo 5M GT2 Timing Belt 6mm Width + 4pcs 20 Teeth 5mm Bore Timing Pulley Wheel + 4pcs Idler + 8pcs Tensioner Spring Torsion + 4pcs Gear Clamp Mount Block with Allen Wrench for 3D Printer

Timing Belt The timing belt is made of premium rubber, durable and flexible. It's designed specifically for linear motion, high positioning accuracy. Round tooth profile guarantees that the belt tooth fits smoothly. It is popular for most 3D printers.
Timing Pulley Wheel Adopt high-quality aluminum, excellently machined, finished smoothly. The timing pulley with 20 teeth contact with the belt which minimizes the risk of the belt slipping.
Timing Belt Idler Pulley Made from high-quality aluminum alloy, high hardness, anodized surface treatment, effective waterproof and rustproof, corrosion-resistant, more beautiful and durable.
Locking spring made of carbon steel, it has corrosion resistance and high surface strength, with spring, you can add the appropriate tension required and make printing more accurate.
Mounting block made of aluminum alloy, which is applied in the open buckle of 2GT belt (and some other models); Ensure that the transmission is secure and no looseness.