The gop18v ec cordless multi tool from bosch has all the benefits you would expect of a cordless tool combined with the power of a corded mains powered tool featuring a high performance brushless motor powered by bosch39s excellent 18v 40ah lithium ion battery technology the gop18v ec with it39s 20 different accessories can cut sand and grind all types of material quickly accurately and efficiently the lithium ion battery also allows the multi tool to run for longer too so it39