Material:Handle 1.4308 (AISI "316" equivalent) stainless steel.Thrust washer 1.4034(AISI 420 equivalent) stainless steel, hardened.Hinge pin and stud 1.4305 (AISI 303 equivalent) stainless steel.Version:Handle electropolished or blasted.Thrust washer, hinge pin and screw bright.Note:Adjustable cam levers are used when the position of the clamping lever relative to the clamping axis permits only one specific position (swing circle interference). The exact position of the clamping lever is adjusted with a screwdriver via the fine thread on the stud.The thrust washer face is lightly greased before delivery.The grease is FDA constyle and is suitable for use in the foodstuff and pharmaceutical industries.Drawing reference:1) setscrew for fine adjustment of lever