Stores and organizes 126 accessories with a universal fit for all size shanks including 1/16", 3/32", 1/8", and 1/4". Measures 7" wide by 4" high (178mm x 102mm) and holds 693/32" or 1/8" burs in 2-step holes, 121/4" burs, and 451/16" burs. Burs are NOT included.