Magleads/Magnetic Leads (Red) 300mm long. Leads fitted with a tiny powerful magnet at either end. Place near to a battery case and it connects by itself or place next to a batten bulb holder connector and you have your first working circuit. The magnets, which protrude from the ends of the leads, are 4mm in diameter. Children no longer have to strip, cut or make mechanical fixes and leads can be daisy chained together to extend their length with ease. Sold as each. Other leads, batteries, Bulb Holder and Bulb shown in picture are NOT INCLUDED.