For insertion and removal of fasteners and fixings using 1/2in. square drive tooling, these insert bits are manufactured from chrome vanadium steel, fully chrome plated with a mirror finish and aluminium-free to ensure non sparking. All have a ball retaining groove on each face of the square drive. The bits can be purchased in various sizes to suit your needs. Features and Benefits Manufactured from chrome vanadium steel for maximum durability Available in a range of sizes to suit your needs Fully chrome plated with a mirror finish for bolstered resistance to corrosion, wear and tear and for easy cleaning of your component Aluminium free composition ensures the tool is non-sparking for safety when using in automotive environments Ball retaining groove on each face of the square drive ensures a positive lock for easy loosening and tightening of fasteners Typical Applications Construction DIY Engineering Standards Conforms to DIN standards