... pinsMaterial standard:GCr 15Diameter :4mmLength: 21.8mmLength Tolerance:0/-2μmWeight:21.5kg ten thousand picture of 4*21.8mm needle roller:2.The ... /-3,-2/-41h13-3/-5,-4/-6,-5/-7-6/-8,-7/-9,-8/-10G30/-1030/-3,-1.5/-4.5,-3/-61.5 ... products,because we have these machines to control our quality.8.CertificationWe supply a vast array of needle roller,cylindrical roller ...