This santoku was hand forged from 52100 steel. It is extremely sharp and will stay sharp due to its edge harness being around 63 hrc. However the the spine of the knife is around 45 to keep it strong just in case it is dropped. It measures at 11.625 long, 2.0 wide, and .100 thick. The blade is 7.0" long.The handle is made from acrylic with a copper spacer complete with 304 stainless pins and bolster. I hand sanded the blade from 240 grit all the way up to 2000 grit to help resist rust and staining. It is a beautiful knife and well balanced.