More elastic titanium material for self crimping effect. elastic self crimping loop shortens the time of surgery. stable design provides maximum sound output. reduced risk of osteo-necrosis. super titanium piston is mri compatible. super tita-ptfe piston can be easily cut due to ptfe shaft. simplified loop introduction to incus by easy downward movement. both pistons can be trimmed by using osseous cutter (ref : ei01)