Size: Length - 18cm , Height - 4cm , Width - 4cm Unique Cassettes With Perferated Sides To Ensure Complete Sterilization Of Instruments. Compact Overall Dimesions: High Impact Autoclavable/Boilable Plastic Sterilizing Cassettes Fits All Types Of Sterilizers. Evenly Perforated On 3 Sides To Allow Thorough Circulation Of Steam/Water During The Sterilization Cycle. Can Be Used Chair-Side Also. Take Double Ended Instruments. Prevent "Dulling" Of Instruments And Minimizes Noise.