Specimen blocks are safely stored in Blocklock storage modules, a component in the BEEM Specimen Storage System 2000. All Blocklocks can be inserted in a Plastic Protective Box or, by utilizing the adhesive feature, mounted in combination with other Blocklock modules on the BEEM mounting panel that fits in a standard " D-Type" 3-ring binder. Block snaps into cavities so it cannot be inadvertently dislodged. Number and letter identify each cavity. Measures 4-5⁄8"L x 3 .5"W x 5⁄16"H (117 x 90 x 8mm)