Duplo 45002 tech machines set duplo 45002 p the duplo 45002 tech machines set provides an ideal introduction to science and technology the set includes four screwdrivers and integrated screws as well as lots of versatile elements like reels hooks and scoops p p tech machines is designed to help develop fine motor skills as well as exploring machines and engineering skills p p two in box activity starter cards and teacher booklet are included to help show how the set can be used for