Convex Edge Offset Handle Flat Tension Screw Brushed Finish Cobalt Alloy Metal Made of stainless steel produced from Swedish Sponge Iron. This iron is made with iron ore containing an extremely small amount of impurities. The resulting steel has a low impurities content and excellent wear resistance, and is a fully rust proof stainless steel. Yasaka shears were first introduced to US hairdressers by the visionary, Geri Cusenza, founder of Sebastian International, over 30 years ago. Hundreds of thousands of Yasaka shears were sold, and they became the standard for function and affordability. Unique in their two-part design, each shear is a combination of Japanese forging techniques, modern machining methods, and traditional hand-craftsmanship. The result is a shear whose design continues unchanged to this day, with many of those original shears still in use and beloved CODE SS450 MATERIAL ATS314 Cobalt Stainless Steel SIZE 4.5in BLADE LENGTH 40mm FULL LENGTH 120mm CODE S-500 MATERIAL VG10 Cobalt Stainless Steel SIZE 5in BLADE LENGTH 48mm FULL LENGTH 130mm CODE SM550 MATERIAL ATS314 Cobalt Stainless Steel SIZE 5.5in BLADE LENGTH 54mm FULL LENGTH 145mm CODE M600 MATERIAL ATS314 Cobalt Stainless Steel SIZE 6in BLADE LENGTH 63mm FULL LENGTH 155mm