TechCard Beams Pack Techcard 15591 Pre punched strips which can be folded into U shaped channels for strength and used to make uprights and load bearing beams Techcard Beams Pack of 40 3x10 Holes
TechCard Pneumatic Pack Techcard 15520 A classroom resource pack of pneumatic syringes connected by plastic tubing enabling models to lift and drop a load at will Techcard Pneumatics Pack