The CTA Tools 3-pc Universal Wobble Drive Socket Bit Set, No. 9594, is designed for working on fasteners in tight or awkward spaces. It includes 1/4", 3/8", and 1/2" square drives, and each bit allows up to 10 degrees of tilt with an additional 10 degrees of rotational movement for enhanced access. A 1/4" hex shank allows quick tool changes, and the 3" long design with magnetic tips helps keep fasteners centered.