Best Worm wheel gear choice of gearing when high drive reduction is required. Worm Tires resemble spur gears by 
adding a throat cut in to the O.D. of wheel. The throat permits the worm wheel to totally envelope the threads of the worm. Threads, not really the teeth are cut on the worm, and by adjusting the number of threads, different ratios may be accomplished without altering mounting arrangements. A unique feature of Worm and Wheel assemblies is their ability to prohibit back driving
Pitch: 16 to 64 DP and 1.5 to .5 MOD
Material: Brass for Worm Gear and STAINLESS for Worm
Single, Double or Quad Start