Titanium chain ring Bolts Standard:DIN,ASTM,GB,BSW, ... DIN6921,DIN931,DIN934,DIN6923DIN985 3 bicycle,motorcycle,wheel,eye,stud,anchor,spring,medical,bone,ball 4 drywall,machine,furniture,color ... 5%Craft:special unique processing technologyApplication:bicycle,motorcycle,wheel,anchor,medical,bone,ball,marine,chemical,sports etcPackage:Plastic ... with you in a near future. titanium chain ring bolt