Rolling friction car kit, provides four cars for exploration into the force of friction, Each car provides a set of different material wheels (wood, fabric, soft rubber, soft silicone), Weight (lb): 1.0, Length (in):5.8, Width (in):6.5, Height (in):3.5
Pulley Bench Clamp Fitting, 50 mm Diameter Pulley, Overall Length Of Frame (Pulley Bar) 110 mm. Maximum Clamp Opening 25 mm, Metal Clamp With Plastic Pulley, With The Pulley Overhanging The Edge And In A Vertical Plane. Overall Length Of Frame (Pulley Bar) 110 mm