31pc Screwdriver Bit & Adapter Tool Set includes 30pc Cr-Vbits, 1pc Quick Change Adapter Packed with super quality plastic case 31pc Screwdriver Bit & Adapter Tool SetMaterial: S2/Cr-VContains:30pc 25mm Cr-V Bits1pc Quick Change AdapterPackage: mini plastic case 31pc Screwdriver Bit & Adapter Tool Set