Description: Material: Aluminum Size: 74*25*29mm/2.91*0.98*1.14in Weight: 60g/0.132lb Application: 30 Holes Opening Aluminum Dental Burs Holder Box (20 for high speed burs and 10 for low speed burs) Advantage: Autoclavable in 135°C and pressure of 0.22Mpa 100% Brand new and high quality Fully autoclavable metal