Learning Resources Design & Drill Gears Workshop. Little engineers use a realistic working power drill, chunky bolts, and colourful gears to create twisting turning chain reactions while building their fine motor skills. This STEM construction set includes an activity board with convenient carry handle, drill, screwdriver, 9 gears in various sizes, 32 colourful bolts and 10 double-sided pattern cards Features multilingual guide and packaging. Drill requires 2 AA batteries not included. 56 Piece Set (Ages 3+)