Bi-metal spiral spring
Bimetal-Spiral spring Spring made from Thermo bimetal.Stretches with heat. Ideal for physics experiments. Length 17 mm. dia. 5 mm Material
Bimetal, strip 20 cm length
Bi-metal strip Good working range, 20 cm long
Boat hull ‘Jumbo’ (metal)
Boat hull ‘Jumbo’ Coated boat hull made of metal If you get 2 pieces you can make a submarine. Size:
CO2 Cartridge 10-Pack
CO2 Cartridge 10-Pack CO2 Cartridge 10-Pack The best cartridges available for launching dragsters. Consistent quality ensures the fairest races. Also,
