supply high strength wear multi-drill

made by zinc base abrasion resistant alloy for high strength,which replace copper in 21 century, this alloy can be use 1.5-4 times than copper and 40% cheap in price.we also produce worm gear, worm, bush , slipper block and nut by this material.all the products can used in gear box, speed reducer, woodworking machinery, oxygen pump, door machine, carton machine and press-casting machine.your welcome to have order in this productsMOB:+86-13613079064MSN:deker3515@hotmail.comSkype:dekerhuang