Non-magnetic design is excellent for models, miniatures, electronics, computers and more. Set includes tough 3-1/2 inch rubberized plastic handle with serrated grip and integral chuck. Steel bit-holder shank can be extended an additional 3 inches for hard-to-reach areas. 25mm-long chrome vanadium bits have hex shanks and include Phillips 000, 00, 0, 1; Pozidriv 0, 1; flat 1.0, 1.5, 2.0, 2.5, 3.0, 4.0 mm wide blades; Torx T5, T6, T7, T8, T9, T10, T15, T20. Packaged in a convenient plastic storage/carrying case with latching lid.