1.Material : Alloy Aluminum 2.Usage : the accessory of the HDD 3.OEM ... , stem nuts, shafts(axles, spline shafts, dart shafts),gears (pinions, wheels ) bearing, bearing seat, spring, connector, socket, bushing, push-button, etc ... for sea and air transportation or as requiredCertificateISO9001:2008 Customized Alloy Aluminum stamping part