Amazon.com: Xuulan Xianglaa-Timing Belt 3D Printer Parts GT2 170-2GT-6 Timing Belt L=170mm W=6/9/10mm in Closed Loop (Size : Width 3.5mm) : Industrial & Scientific
Amazon.com: Wledong-Synchronous Belt 158/160/166/170/172/176/180 GT2 Timing Belt W=6/9mm 2GT Closed-Loop Synchronous Belt 3D Printer 158-2GT 172-2GT, 10pcs, Precise and wear-resistant ( Size : 158 GT2 , Color : 9 : Industrial & Scientific