Aiskaer&reg; 3.8mm + 4.5mm Security Bit Screwdriver Tool +Free Clean with a small brush.Support Open NES SNES N64 Super Nintendo 64 Cartridges & Systems. (Large) Made from durable steel and plastic Metal rod about 7.5cm, overall length 15cm .The total length of the brush is 13 cm 3.8mm screwdriver for NES, SNES, N64, Virtual Boy, Original Game Boy, & Sega Game Gear 4.5mm screwdriver for Sega Genesis, Sega Master System, & Seg Opens systems for Super Nintendo, Nintendo 64, Game Cube, Virtuastem, and Sega 32X as well as system