... /G1000 ISO qulified company Production name1/4 inch steel ball for bicycle spare partssize1/4",3/16",5/ ... case-hardened only(surface heat treatment),low carbon steel balls offer considerable saving in all those applications ... furniture wheels,bearings for darwers,locks,grease,nipples,sliding,blocks,toys.MOQ 1Ton for each sizePayment terms1 ... than 5000ton/year 1/4 inch steel ball for bicycle spare parts