9 Gauge 1/4" Head. Use to fasten wire and fencing to wood posts. High quality products to markets as diverse as DIY, hardware, automotive, security, ironmongery, electrical, domestic, fastener, plumbing, fixings, child safety, packaging, soft furnishings, shop fitting, flooring and gardening, as well as being an original equipment manufacturer for other manufacturers. We stock many grades of fasteners ranging from low carbon steel on up to hardened, heat treated steel. Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed building or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person.