Strong and durable, these multipurpose bits are for use with bit screwdrivers. They're designed for screws with a square recess in the head and are also known as Robertson bits.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

Bits have a different size at each end.

While screws with a square/Phillips combination drive can be turned with either a square or Phillips bit, these make the best contact so you can apply high torque without slipping and stripping the recess. They are also known as Quadrex bits.

These bits are shaped like a 12-pointed star. They're also known as XZN bits.

Also known as Robertson bits these are designed for screws with a square recess in the head.

Attach these adapters to square-drive tools.