Eisco Basic Electricity Kits - Eisco BKEPH2010, This comprehensive kit from Eisco provides a low-cost and flexible alternative to the "circuit board" approach for investigations into simple electricity circuits.Each component - such as a switch, rheostat or bulb holder - can be mounted on its own individual plastic panel with 4mm sockets. The panels are then formed into circuits by using 4mm stackable leads.Each kit is supplied in two polystyrene trays that keep the units organised. Designed as a resource for the teaching of introductory electricity, these kits include a well-structured instructional material and robust components mounted on tough, plastic bases, each with two 4mm sockets. Eisco Comprehensive Basic Electricity Kit