IMS Bur Cushion Short Lid Holds 6Holds 6 burs Built with a silicone base Hollow design provides easy drainage and cleaning Autoclavable IMS Bur Cushion with a short silver lid securely holds six burs in its silicone base during cleaning and sterilization. The hollow construction allows it to drain easily while offering hassle free cleaning. Each bur cushion is autoclavable and measures 1. 75 x 1. 3 x 0. 9 in (44 x 33 x 22 mm).