Specification:<br />Material:DuPont Nylon<br />Size:5 mm hex<br />Color:black<br />Weight:about 30g<br /><br />Features:<br />Using authentic new DuPont nylon material<br />Because it is a nylon material, there is a certain ductility,withstanding the maximum power of 40N<br /><br />Package Included:<br />1 x Crank cover wrench