Test Tube, plain, with bakelite screw cap & rubber liner, Material: Made from high quality, heavy duty, Borosilicate Glass, Dimension: 150x25mm, capacity: 50ml, pack of 12
Basic circuit kit, with a switch, (2) 'C' Batteries with Holders, (2) Light Holders, (5) Bulbs, and bulk wire for connecting, for a classroom or home experiment. One kit works well for a group of 3-5 students and demonstrates the pricinples of circuits and electricity