Convenient, economical package of materials to start investigating electricity concepts. Assortment includes: 6 Round Plastic Bulb Holders, 3 Knife Switches, 6 Battery Holders with Fahnestock Clips, 10 Fahnestock Clips, 1 Wire Stripper, 3 Wires with Alligator Clips, 18"; Assorted Colors, 3 Wires with Banana Clips, 18"; Assorted Colors, 100 Feet of Insulated Copper Wire, 22 gauge, & 10 each 1.5 V Bulbs.