This product is made of good and , workmanship, very and . The timing and copper is small in size and light in weight, which is very convenient to carry around. They are easy to install and very convenient to use. They effectively function as a 3D printer . Minimize the possibility of sliding, high strength structure design, resistance to stretch, jump, make transmission more stable. Features -Color:Multi -Material:Brass, Rubber -Size( Timing ):60.00X0.50X0.10cm/23.58X0.20X0.04in -Size(Copper ):1.00X1.00X0.60cm/0.39X0.39X0.24in - and Flexible: The 3D printer timing is and flexible. It is not easy to slide and absorbs shocks, so it can provide stable speeds. -Long Time of Use: Wear resistant and anti-slip tooth surface, anti- and anti-jumping, extended service life. -Excellent Workmanship: Specially designed for linear motion, with high positioning accuracy, fine workmanship and resistance. -Wide Application: Wide range of applications. The timing and copper is widely used in 3D printers, milling machines, drilling machines, etc. -Good Accessory: With great load-carrying capacity. Suitable for straight line driving, a good 3D printer accessory. It also can bring much convenience to you. Package list: 1 x 5m GT2 Timing 10