Hardened Headless Steel Brads (Sprigs) Hardwood floor installations. Brads have a sharp needle point and can be sunk out of sight into the material. When gluing they hold material in place until the adhesive. The deal on hollow and loose spots. Always wear proper eye protection when using these brads. 3/32" Taper, Cement Coated, 1,000/box - .068" diameter x 1-1/4" long. That shatter like glass when hit wrong!