Screwdriver kit material: High quality steel + Plastic, Screwdrivers Size: 15.5cm/6" approx. Gamebit screwdrivers come with a 4.5mm security screwdriver and a 3.8mm security screwdriver. The 4.5mm & 3.8mm security screwdriver bits set have the features ergonomic plastic handles and it is is for opening compatible retro game consoles and cartridges. 3.8mm Security Screwdriver is for Opening 8-bit NES,16-bit SNES, N66, Game Boy, Sega Genesis Cartridges, Sega Master System, Sega Game Gear, and Game Boy Color Games. 4.5mm Security Screwdriver is for Opening Consoles, Super Nintendo, N64, GameCube Consoles, and it also opens the Snes-103 Mini SNES Console and the NES Top Loader Console. Product Description Gamebit screwdrivers Screwdrivers is made in high quality steel and comes with a 4.5mm security screwdriver and a 3.8mm security screwdriver.Generous 7 cm (2 3/4 in) shaft length Extra Long Gamebit Shaft Makes it Easy to Remove Screws From System Consoles And Game 3.8mm + 4.5mm Screwdriver Bit Suitable for multiple game consoles