Blue plastic cellulose butyrate (Cellidor™ - Bayer AG) polls.Malleable cast iron centre.Wooden handle.Two cambered faces.Replaces all similar hammers of copper, lead, brass, rubber or wood.High-impact.Resistant to low-octane fuels, oil and grease.3625NL: Spare polls with cambered face, pair.For ordinary workshop use on pressure-sensitive materials