Power where and how you need it the worx wx170 20v max lithium ion driver has a variable 2 speed design and a 151 clutch position for power and precision in a versatile lightweight compact drill it also comes with a light that shines as you pull the trigger to help when you are working in darker spaces use your 20v worx batteries in any 20v worx tool get the power you need without accessories you dont 10mm chuck to meet common needs variable 2 speed design covers a wide range of dril