Temper hardened steel. Used for nailing lumber to concrete and masonry.
Hardened steel with blunt point and tapered shank cause minimal spalling during penetration and offers even greater pull-out resistance than wire masonry nails. Ideal for attaching wood members to cinder block walls as well as to fresh concrete.
Round wire type. Made of high carbon steel, heat treated and tempered. Designed for fastening furring strip, cleats, flood plates, partition walls, etc. directly to masonry. 9 Gauge - 5/16" Head. MADE IN USA