1. Quenched and heat-treated S2 alloy steel bits, hardness arrived at 58-60 HRC, reducing wear-outs.2. Chrome plated and red paint surface treatment for rust and corrosion resistance.3. The versatile long/short arm design provides extra reach at one end and additional leverage at the other end.4. Chamfered ends insert smoothly into the fastener head, reducing wear.5. The common Torx star key wrench sizes, for removing and installing most star screws in furniture, equipment, and more.6. Torx Drilled tips allow use on tamper resistant security screws.7. There is a size mark on the handle for easy identification.
