feature: This product is a ruler used for measuring tooth gaps. It is made of stainless steel and is durable. A space gauge is one of the measuring instruments used to check tooth space. High precision, smooth appearance and good wear resistance. Can be sterilized in a steam autoclave, dry heat autoclave or chemical cold sterilization. Kit includes the following sizes: 0.10mm, 0.15mm, 0.20mm, 0.25mm, 0.30mm, 0.40mm, 0.50mm Specification: Name: Dental space measuring ruler Type: Oral dental interproximal measuring ruler Application: Measuring tooth space Material: Stainless steel Color: silver Dimensions: app. 45 x 12 x 6.3mm/1.77 x 0.47 x 0.24 inches as shown Quantity: 1 set notes: Transition: 1cm=10mm=0.39inch No retail packaging. Please allow 1-2cm error due to manual measurement. Please make sure you don't mind before bidding. Due to differences between monitors, images may not reflect the actual color of the item. Thank you Package includes: 1 set x Dental Space Measurement Ruler (Other accessories demo in the picture is not included.)