Silverhill Tools ATKNND Nintendo Security Screwdriver Bit Set 3.8mm & 4.5mm Set of 2 Screwdrivers made in high quality CRV6150 steel Generous 7 cm (2 3/4 in) shaft length 3.8mm screwdriver for Original Nintendo (NES), Super Nintendo (SNES), Nintendo 64 (N64), Virtual Boy, Original Game Boy, Game Boy Color, & Sega Game Gear 4.5mm screwdriver for Sega Genesis, Sega Master System, & Sega 32X Opens systems for Super Nintendo, Nintendo 64, Game Cube, Virtual Boy, Game Gear, TurboGrafx 16, and TurboDuo. <span class="a-text-bold">Two Nutdrivers: </span>in both 3.8mm and 4.5mm sizes <span class="a-text-bold">CRV6150 steel shank.</span> CRV6150 is a high quality steel that resists chipping, bending, or stripping. It is much better than hardened steel or blackened steel. 3.8mm Nut Driver supports the following games: <ul class="a-unordered-list a-vertical"> Gameboy Gameboy Color Nintendo 64 (N64) Nintendo Entertainment System (NES) Nintendo Super Nintendo Entertainment System (SNES) Sega Game Gear Virtual Boy 4.5 mm Nut Driver supports the following games: <ul class="a-unordered-list a-vertical"> Sega 32X Sega Genesis Sega Master System 4.5 mm Nut Driver supports the following systems: <ul class="a-unordered-list a-vertical"> Nintendo 64 Nintendo Game Cube Nintendo Super Nintendo Entertainment System (SNES) Nintendo Virtual Boy Sega Game Gear Sega Nomad TurboGrafx 16 Turbo Duo Meeting Space Volunteer Coaches Fabrication Shop Engineering, 3D Design, and 3D Printing classes for kids as young as 10 years old