The Brabantia Metal spike has a closable cap and is made of galvanised steel plate, so it's corrosion resistant too. It stays clean with the handy closure cap. It's durable and sturdy, with a corrosion resistant galvanised steel construction. No concrete is needed for use. The product comes with a 5 year guarantee and service. It's a perfect match for size 2, made for Topspinner and Lift-O-Matic rotaries with a 45 mm pole.