Description 1.Dental and Jaw Bone expansion instruments Kit, Made of Medical Grade 2.Instrument: SWA10, SWA7 3.TC-BET:1.8/2.6, 2.0/3.0, 2.4/3.4, 2.8/3.8, 2.9/4.3 4.Driver: Drive S +Drive L Top Quality Material:Stainless Steel 121°C Autoclavable,the box can also be sterilized