2Pcs 2GT-20 Teeth Timing Pulley Wheel 5mm 8mm Inner For 3D Printer 8mm

2Pcs 2GT-20 Teeth Timing Pulley Wheel 5mm 8mm Inner For 3D Printer Feature: Name: 2GT-20 Aluminum tooth belt wheel Tooth: 7.5MM Overall Length: 18.5MM Inner: 8MM / 5MM (optional) Two M3 keyhole 90° distribution Outside diameter: 18MM Tooth number: 20 Tooth pitch: 2mm Hole diameter: 5mm Flange: double Tooth width: 7mm 2PS Setscrews: M4X4 (Stainless steel) Package included: 2 x 2GT-20 Teeth Timing Pulley