BurButler - Sapphire Blue, 10-Hole (FG, CA, Short Shank) Bur Block. Fully Autoclavable Silicone Bur Block with a Clear Lid. Mix and match the shanks to suit your clinical needs. The high temperature resistant silicone base is extremely durable and retains integrity, even after repeated sterilization. *Burs not included* Single bur block