8Pcs GT2 Pulley 20Teeth Bore 5MM + 5M GT2 Belt For 3D Printer Accessories RepRap Prusa Features: 1. Durable and practical 2. Designed specifically for linear motion 3. GT2 Pulley and GT2 Belt are used together,very convenient to use 4. Round tooth profile guarantees that the belt tooth fits smoothly 5. 20 Teeth contact with the belt, that minimizes the chance of the belt slipping Description of GT2 Belt: 1. Length: 5m/196.85'' 2. Width: 6mm/0.23'' 3. Material: Rubber 4. Color: Black 5. Pitch: GT2 Description of GT2 Pulley : 1. Diameter: 16mm/0.62'' 2. Diameter of Hole: 5mm/0.19'' 3. Height: 16mm/0.62'' 4. Teeth: 20 5. Material: Aluminum 6. Color: Silver Package included: 1 x GT2 Belt 8 x GT2 Pulley