97-104mm Mikalor Clamp Stainless Steel & Steel W2 - MS1923 World's favourite heavy duty clamp. The revolutionary patented design of the Supra clamp makes it the strongest on the market and the unique swivelling bridge means that Supra can be mounted in the most difficult applications. Where reliability, strength, high torque and superlative hydraulic performance are needed, industry professionals ask for Supra by name. Available in W2 and in W4 material qualities. • Supra W2 Materials: • Band: AISI 430 Stainless steel Bolt: Steel Cr3 white zinc plated (Chrome 6 free)