Dewalt d21520 variable speed mixer drill has a variable speed reversing switch that offers greater control for a wider range of applications produces 550min that provides increased torque for heavy duty drilling and mixing has a robust design and metal gear case for greater durability 2 position rear spade handle and 3 position side handle provides greater control during use mixing drywall compound mortars and paints with mixing paddle up to 160mm supplied with 1 x 3 position side handle 1 x 2 p