1 1.5 Mod 15T to 60T Gear Copper Worm Wheel Gear & Worm Gear Shaft Bore 5 - 20mm
Model: 0.5 Mod / 0.8 Mod 1 Mod / 1.5 Mod. Worm gear material: Brass. Worm material: Brass / 45# Steel / POM Blue Plastic / Stainless Steel. - Turn a round of worm gear teeth, can get a large transmission ratio.