TUZUK 2PCS Set GT2 Synchronous Wheel 20&80 Teeth 12mm Bore Aluminum Timing Pulley with Length 250mm Width 6mm Belt (20 80T 12B 6)

【Material】: Made of high quality Aluminum Alloy, Surface oxidation treatment,durable, fine workmanship and high transmission accuracy 【Accurate transmission】: without slipping at work, having a constant gear ratio 【Smooth transmission】: precise tooth pitch, High transmission efficiency, energy-saving effect 【Simple structure】: Easy to install, easy to assemble and disassemble 【Widely Used】:Widely used in milling machine, gear shaper, drilling machine, hobbing machine or other machinery transmission occasions