The 174 one star 4.25 long surgical blade breaker holder is stainless steel. The blade length is .510Specs amp; FeaturesBlade BreakerApplication: Ideal for breaking scalpel blades, Quality: , Surface Resistivity : Conductive, Shape: Straight, Material: SS, OAL: 4.25 (106.25mm), Tip Length: .51 (12.75mm)