It is a set of efficient and reliable bits, this one is exactly what is looking for. This set of 24 in 1 precision magnetic bits kit has 24 heads for the holder. It contains 45pcs of different kinds of bits and with high hardness after quenching heat treatment are strictly selected to meet all needs. It is magnetic and easy to change bits. With high-quality materials. It is the unique design of multi-function covers the mainstream electronics in the market, 360 degree & swivel-head handles for more precision & better control. A Great gift for hardware members.