Inculde 4 different most useful tools, used in the installation of air screwdriver, electric screwdriver, air drill, manual screwdriver and other installation for hex tool 105 degree angle extension which you can use in places where you have difficulty getting to. Great wrench tools and can be connected to the drill bit. 1/4 inch hex drive shaft is quick change and fits most power drills and driver chuacks. The 3-Piece Hex Bit Screwdriver Extension Bar Set is designed to meet a variety of needs. Fits snugly and securely in your drill chuck or hand screwdriver. Consisting of your most common bit sizes 1/4", 3/8" and 1/2" changing shank sizes. Provides versatility and convenience no matter which tool you choose to use. Drill Bit Holder-1/4 Inch Hex Shank, Magnetic Extension Chuck Adapter, | 60mm/100mm/150mm Length, Suitable for Electric, Pneumatic and Other Power Tool Screwdriver Bits, extended drill.Connect impact sockets/socket wrenches/bit sockets/driver sockets to cordless power. Flexible Shaft Drill Extension - Length: 29cm/11.42 "(approximately); hex shank: 6.35 mm (1/4"); inner hex head: 6.35 mm (1/4"); Features: for electronic drill, connection link, flexible. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.