The accessories are provided with 4mm pegs that fit into the top of the Van de Graaff sphere.The set comprises:Perspex cylinder (with metal cap, plastic base and 4 metallised spheres)Faraday's Pail (a spun aluminium calorimeter with a short pillar inside with a 4mm hole)Head of hair (bunch of thread joined at one end to a short metal pillar)Point discharger (L-shaped metal rod, pointed at one end)Neon bulb Electric whirl (made from aluminium with pointed arms)Hair Comb