Specifically designed to securely fasten all types of metal trim and tackless strip, this product performs effectively on cement, terrazzo, marble, slate, or any masonry surface. The square drive’s four corners contact the walls of the undersized round hole with exceptional force, providing several times the holding power needed for secure fastening. Available in six popular sizes, packaging options include 1 lb. jars or cost-effective 25 lb. bulk boxes.
Flat head style measures 3/16″ in diameter and 1-1/8″ in length, requiring a 3/16″ x 1-1/4″ hole for installation.
