1.5mm 2.0mm 3.0mm Allen Wrench + NUT DRIVER - POWER TIP V2 SET [Arrowmax]  

This is the ultimate power driver set.

They PRO V2 Tips are color coded and has a magnetic ring to help screws stay in place.

You get:

1 x 1.5mm POWER TIP V2 AM-512115
1 x 2.0mm POWER TIP V2 AM-512120 
1 x 3.0mm POWER TIP V2 AM-512130
1 x 7.0mm NUT DRIVER(WHEEL TOOL) POWER TIP V2 AM-551170

perfect to make your electric driver a rc tool!