Feature: Made of vanadium alloy steel, strong enough and magnetic. 1/4 hex shank suitable for most electric screwdrivers, hand drills. The length is 50mm. The screwdriver head have triangle, Y, U, three points and four points to meet various requirements. Suitable for appliance repair, installation and disassembly, toy repair and so on. Specifications: Product name: Special-shaped Screwdriver Set Material: vanadium alloy steel Color: Grey(As shown) Length: (Approx. ) 50mm / 1.96Inch Screwdriver head shape: Triangle, Y, U, Three points, Four points Suitable for: appliance repair, installation and disassembly, toy repair and so on. Note: 1. Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.