A tremendous value set of THREE magnetic screwdriver bit holders of varying lengths. Manufactured from Chrome Vanadium Steel (CR-V) for longevity and durability and helps resist abrasion, oxidation and corrosion. These come in 3 lengths, ideal for those awkward and hard to reach screws. The set includes 3" (75mm), 4" (100mm) and 6" (150mm) long magnetic bit holders. Takes all standard 1/4" hex screwdriver bits.