Robustly constructed from stainless steel, these 7 giant buttons have a pleasingly rounded discus shape with smooth seamless edges and are graduated in size from 50mm to 140mm diameter. Measures 50mm, 65mm, 80mm, 95mm, 110mm, 125mm and 140mm dia. Chemical free – no toxins, lead, BPA or phthalates, Durable – strong and lightweight, Hygienic – non-porous and naturally bacteria resistant. Supports the following areas of learning: • Personal Development - sensory • Understanding the World - observation • Physical Development - motor skills • Physical Development - hand-eye coordinationustly constructed from stainless steel, these 7 giant silver buttons have a pleasingly rounded discus shape with smooth seamless edges and are graduated in size from 50mm to 140mm diameter.