Sold by the pound, these 11/16" Concrete Nails are touch and hardened nails that resist bending. They are used extensively by carpet installers and repair technicians when stay nailing the carpet for repair where the condition of the aggregate permits. They have a countersunk head style.
The 11/16" size, which is ordinarily used in pre-nailed tack strip, is 12 gauge (.1055" shank diameter) and has a 7/32" head diameter.