Xcelite 99MP 39-piece Series 99 interchangeable blade tool kit includes an assortment of interchangeable handles and screwdrivers, a nut driver, and spline blades, as well as other accessories for electronics repair and maintenance. The set includes 39 pieces from the Xcelite's Series 99 interchangeable tools: two screwdriver handles, one extension, one nut driver handle, nine nut driver blades, 25 screwdriver blades, and one reamer. The handles are made from plastic, and the blades and other tools are made from alloy steel. The tool kit comes in a roll-up canvas case that is plastic coated for durability, and it includes separate pockets for each tool for organized storage and portability. Two extra pockets are included in the roll-up case for the addition of other tools (not included). The set weighs 3 lb. and it comes with an Xcelite 12-month limited warranty that ensures products will be free from defects under normal use and service.