The 90° allows for excellent access when drilling or driving in narrow and hard-to-reach areas. Full metal casting structure of ABS,high-strength alloy steel provides good strength and durability. With an ergonomic ABS handle,which does not while in use,so it allows for tighter access with your current driver to increase gear strength. PH2,PZ1/2/3,TX10/15/20/25/30.3.Impact value: Suitable for the latest 18V driver and drill bit. The drill attachment at 90 degree angles with shaft is suitable for many portable electric drills.