ITEM DISCRIPTION. 5 X HIGH CARBON SPRING STEEL. SIZE IS METRIC 48.00X 0.40X 304mm FINISH.BLUE AND BLACK. HARDENED AND TEMPERD TO 480-530VPN ...DELIVERY... STRIP WILL BE LIGHTLY OILED TO STOP COROSION.AND PACKAGED IN A POSTAL BAG WITH A SILICA JELL PACK .COLLECTION IN PERSON IS OK. VIEW MY OTHER SPRING STEEL SIZES.