Deko Premium Homeowner/mechanic T-Shape Ratcheting Screwdriver 25 Piece multi-bit set Product Dimensions: 6.6 x 3.9 x 1.9 inches Batteries Included : No; Batteries Required: No Item Package Quantity : 25 INTERCHANGEABLE SHAFT- to accomodate both the larger and smaller bits CONVENIENT- All bits fit snugly in durable plastic case, easy to put bits back in place