Check the listing for details. 2pcs Dental Props Bite Block Saliva Ejector Mouth opener Shield Sterilize Drying. Color: Mixed Color, Condition: New, Made in China. Listed at 21.99 USD. Product:saliva suction tube Color:Purple Package:2Pcs 1 Product model/specification and its division description 1.1 The saliva suction tube is divided into three types: S, M and L according to different sizes, representing three different sizes of saliva suction tube. 2. Performance indicators 2.1 Size index Model Length Color L 145mm±5mm green M 125mm±5mm Purple S 105mm±5mm Yellow Appearance The saliva suction tube indicates that it should be clean, free of stains and dirt; it should be complete and not broken or separated; it should be smooth, free of burrs and scratches. Function The places where the mouths of the saliva suction pipes are connected are sealed and air-tight.