Simple Machines Screw (Pack of 2) Brand_Kashi Go help lower household electricity costs

help lower household electricity costs and eliminate the need to ever replace a bulb

Digital over current fault protection

naturally sweet and mellow

Microprocessor controlled for accurate charging

Simple Machines Screw (Pack of 2) Brand_Kashi Go help lower household electricity costsThe screw, another of the simple machines, converts a circular motion (the turning of the screw) into a linear motion. It also lets you amplify the force a great deal, since turning the screw only moves the end of the screw a small amount. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized. Product Type: Simple Machines Recommended Grade: Grade 4+ Recommended Age: 9+ Years GRP: ERGO