The Kobalt 100-Piece Screwdriver Bit Set is a high-quality tool set designed for various screwdriving tasks. With a lifetime manufacturer warranty, this set includes 100 pieces of standard (SAE) size screwdriver bits made of durable steel. The dark gray color and magnetic bit holder make it easy to organize and transport the bits. The set also features a socket adapter and bit adapter for added versatility. Made in China, this bit set is a reliable and convenient addition to any home or workshop.