We are yijia machine co Ltd, who is a manufactory main products are worm gear, worm, shaft sleeve, bush, bedway and nut, all the above products are made by zinc base abrasion resistant alloy for high strength. zinc base abrasion resistant alloy for high strength is a material which will be replace copper for the use longer time and lower price.Just tell me a size you want, and I will send the sample to you to confirm if you reply.Looking for you early reply for orders. Best wishes to you
