Mod 1.5 Worm Gear Wheel Brass 40 Tooth Worm Shaft 45# Steel Precision Ø 8-20 mm
Worm gear material: Brass. Worm material: 45 steel. - Turn a round of worm gear teeth, can get a large transmission ratio. - material selection, carefully processing create product. -High strength and hardness.Durable in use.