Scratch & Sketch Extreme It also serves as a

It also serves as a tool to help finetune your motor skills

The UGears Safe puzzle kit comes with everything you need to build your own tabletop mechanical safe

Discover amazing flying machines -- from the space shuttle to rescue helicopters to aerobatic planes

Constructed of strong metal and plastic

You can alter the gears using the transmission fork to observe how the speed varies between the drive and driven pulleys

Scratch & Sketch Extreme It also serves as aAs you trace intricate artwork on the black coated pages, a wolf, mandala, night sky, unicorn, and so much more emerge in sparkling foils of silver and green, or colorful swirls! Scratch away the black coating on each page with the stylus included, and see your puzzle solutions come to light in glittery sparkles and colorful swirls! Scratch book contains 10 black coated silver or green glitter pages and 10 black coated colorful swirl pages 20