We are Foshan Shunde Yijia machine co.,Ltd, who located in Guangdong of china ,as a factory, we main products are gear , worm, shaft sleeve, bush, slipper block and nut , something like transmission. all the products are made by zinc base abrasion resistant alloy for high strength which are as a part of machine. zinc base abrasion resistant alloy for high strength, the use time of our product which made by zinc base abrasion resistant alloy for high strength are 1.5-4 times than copper, and the price are lower 40% also. International machinery town, chengcun, shunde district, foshan city, Guangdong province, china mainland MOB:+86-13613079064 MSN:deker3515@hotmail.com skype:dekerhuang just send ours a drawing,and we will send you a kindly quotation .