HSI Mouth Prop Size 952 Child Black Disposable Autoclavable Rubber 2/Box Packing:2/Box Product Features Specifications Usage Instruction – Child and adult sizes have a stainless steel insert for structural integrity– Autoclavable– Steam-gravity sterilization for 30 minutes at 250F– Not made with natural rubber latex Age: Child Autoclavable: Autoclavable Color: Black Composition: Rubber Disposable: Disposable For: Structural Integrity Item: Mouth Prop Size: 952 With: Stainless Steel Insert