The most durable die grinder that Atlas Copco ever made. This is truly a partner to rely on in those really tough applications. For work in cramped spaces, with collet. The angled models (LSV) have a patent that overcomes temperature and leakage problems commonly associated with angle head tools. The result is a leak-free and self-cooled angle head. All models are lubrication free except for the high speed model LSF19 460. LSF versions have scatter damping.