Sutton SupaTorq Phillips PH2 Screwdriver Bits 50mm - 2 Pack

The size you reach for most, and the one that wears out first if it's cheap.

The Phillips PH2 tip is precision-ground to sit deep in the screw head, so it grips instead of chewing out. A magnetic tip holds the screw while you line it up, which earns its keep when you're working overhead or in a tight corner. The torsion neck flexes under load instead of snapping, and the 1/4 inch hex shank drops straight into a drill or impact driver.

Chrome vanadium steel is what separates these from the bargain-bin bits that round off on the third screw. Grab the pack that matches your screws and keep a spare in the kit.

Full specs are in the tabs below.