... diamond point,flat head 4. Finish: Polished/Zinc coated Common Iron NailsAvailable in countersunk, checkered or plain head, diamond point, polished.Application: Common nails ... twistHead Diameter: 2-6mmPoint: diamond pointSurface treatment: polished, galvanized , annealing , coated, Blue, zinc galvanizedUsage: Construction, walls with staples Common nail Roofing nailConcrete nail bright common nails