Blade: 12mm, 18mm, 24mm, 30mm, 42mm. Steel: High carbon steel. Due to different production periods, the chisels in this set do not have the black finish on the back side of the 24mm and 30mm blades. Although they are the same brand of chisels, this can be confirmed in the images. Please check these before purchasing with your approval. This set of chisels of this brand can be changed to different sizes. Please message us if you need the combination of sizes you require. The boxed set is only compatible with the 5 chisel set. Please message us if you would like to order a set with other sizes or number of chisels. Thank you very much. We will send you a new invoice and offer a discount. International Buyers – Please Note. ·We do not mark merchandise values below value or mark items as gifts US and International government regulations prohibit such behavior. Please see our other items. Please find a best item in.