NiTi shape memory alloy washers Mini Screws:M1.0~M4 x L Other:M4~ ... or Images on Item NameNTi Shape Memory alloy washersMaterialNitinol shape memory alloy, Pure Titanium and Alloy TitaniumGradeNi50:Ti50at%, Gr1,Gr2,Gr3,Gr4,Gr5 ... Implanted, airplane, ship, bicycle, motorcycle, auto, medical, chemical, wheelchair, sports, anchor, weapon, etc. M1.0 Nitinol memory alloy washers