if placed by 12PM EST
Free US Shipping on orders over $25
Set of 2 Hall's Friction Cars.
Can be used with an incline plane, weights, and pulleys to study the relationship between energy and work.
Low friction wheels.
Oil free sleeve bearings - never needs adjustment.
Each car apparatus is a total of 8" long, with a carriage measuring 5.25" long, 2.25" wide, and 1.5" tall.