1. 48 in 1 Set: - 1 x hand - 1 x extension bar- 1 x spudger- 45 x screwdriver bits2. Those screwdriver bits is made of chrome vanadium, which is a mixture of alloys. It improves rust resistance and withstands heavier loads3. Ergonomic design, those screwdriver bits is made of chrome vanadium, which is a mixture of alloys. It improves rust resistance and withstands heavier loads4. 45 different types of screwdriver bits to meet your needs

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