ITEM NAME:Dental Orthodontic Interproximal Reduction (IPR) Gauge Reciprocating IPR Syst MO.Set includes following sizes: 0.10 mm, 0.15 mm, 0.20 mm, 0.25 mm, 0.30 mm, 0.40 mm, 0.50 mm. Can be sterilized in a steam autoclave, dry heat autoclave, or in chemical cold sterile. Size: About 4.5x1.2x1cm/1.7 0.47 0.39in.