These two cordless drill drivers are based on the new Hilti 22 volt platform. The SF 8M is specially designed for use in the metal fabrication trade while the SF 10W-A22 meets the needs of those who work on wood. Both tools incorporate new features: a rugged metal chuck and new 4-speed gearing for an even better match between rotational speed, material thickness and drill bit diameter. The SF 8M and SF 10W-A22 represent a further logical step in the ongoing development of the Hilti design language.