These Benchtop Counters are perfect for blood cell (label included), bacterial colonies, or other repetitive counting. Available in 6 and 9 key variants * Each key records up to 999 * Total window keeps track of total number of strokes made on all other keys; bell rings when total reaches 100 Blood cell key labels SPECIFICATIONS: * Color: Grey * Dimensions (L x W x H): 9.8 x 3 x 2.2 in (25 x 7.6 x 5.6 cm) * Material: Carbon Steel * Quantity: 1 Each * Type: 6-Key