This new timber screw development by ECO TIMBER GROUP cuts installation timeframes in half, attributed to a unique "spear head” self-tapping screw design. ECO BLACKHEADZ is a self-drilling screw designed specifically to penetrate Australia’s toughest hardwoods without splitting! The black head screws are extremely strong and can securely pull together wood without the need for pre-drilling. Simplify your work and achieve a flawless finish with our hardwood screws.