ITEM DISCRIPTION. 1X HIGH CARBON SPRING STEEL ANNEALED.COIL C75S. SIZE IS METRIC 12.00mm X 0.6mm X 1KG COIL. FINISH.BRIGHT....THIS IS ANNEALED NOT HARDENED AND TEMPERED..HARDNESS IS 150-200 VPN ...DELIVERY... COIL WILL BE LIGHTLY OILED TO STOP COROSION.AND PACKAGED IN VCI PAPER AND POLLY. COIL IS FREE FROM RUST HAS MINIMAL EDGE BURR.AND EDGE BOW.COLLECTION IN PERSON IS OK. VIEW MY OTHER SPRING STEEL SIZES.LARGER ORDERS CAN BE OBTAINED ON REQUEST THANKYOU FOR LOOKING.