The DT70762 85 Piece assorted screwdriver set is part of the Dewalt modular Toughcase accessory range. This set comes in the Large ToughCase® ready to fix to the top of your existing Tstak case. The additional sets shown in the yellow circle are not included - this is an example of the Dewalt Toughcase / Tstak compatibility The DEWALT ToughCase+ Accessory Storage solutions have premium features to help keep drilling and fastening bits organized. The system includes four container sizes; the Small Bulk Storage Container, Small ToughCase®+ Container, Medium ToughCase®+ Container, and Large ToughCase®+ Container for unlimited configurations. The ToughCase®+ Containers feature newly-designed bit storage, with a unique bit bar position that allows for easy removal .