Wards Essentials Trebuchet Kit, Material: High quality precision-cut Birch verner pure bond plywood, Designed to be safe and robust, Dry firings and heavy projectiles are no problem, Holes are pre drilled, Medieval weapons, engineering, and physics, Beam arm: 21in
Force Table - Economy 3-Legged, Weights Not Included, Inexpensive, Light In Weight, Made From Durable Pvc 3 Legged Force Table, Supplied With Ball Bearing Pulleys & Weight Hangers, Accurate Product, Lighter In Weight, Top Made From Durable Pvc
Pulleys Plastic, Double-Long, Double Plastic Pulley In Tandem, On A Steel Frame, With Hooks At Each End Carrying Two Plastic Pulleys With Diameters Of 38 And 50 mm, Inner Gap Of Pulley Measures 3 mm, Overall Length Is 11.4 Cm. Capable Of Holding Over 30 Lbs Of Weight.