Material: highest quality nylon Special heart realease design Size:4.5",5",7" For avrasive:16+finer Thread:M10*1.5/M14/M16/5 Material: highest quality nylonSpecial heart realease designSize:4.5",5",7"For avrasive:16+finerThread:M10*1.5/M14/M16/5Used with highest quality nylonDifferent type of the pads fits for customers"requirementsFits with all kinds of electric and pneumatic angle grindersCan ...