Feature: 100% Brand new and high quality This product is a gap measuring ruler for teeth, made from high-quality material for durability and long-lasting use. The gap gauge is one of the measuring instruments used to check interdental space. High precision, smooth and clean appearance, good wear resistance. Can be sterilized in a steam autoclave, dry heat autoclave, or in chemical cold sterilization. Set includes the following sizes: 0.10 mm, 0.15 mm, 0.20 mm, 0.25 mm, 0.30 mm, 0.40 mm, 0.50 mm. Description Material: Metal Color: Silver Size: About 4.5x1.2x1cm/1.7*0.47*0.39in Package Included: 1X Set measuring rulers Note 1. Our sizes are Asian sizes, 1-2 sizes smaller than euro sizes, please choose your size according to the size chart. 2. Due to hand measurement, there may be a size error of about 1-2 cm. Item color displayed in photos may be showing slightly different.