Want to build a long-lasting piece of furniture, tree house? Or need to fix a worn out fastener? With a RAMPA insert you can be confident that your connection will handle whatever you build. Our patented thread delivers high pull out values (up to 1,300 lbs) depending on your material. With a hex drive for easy installation along with a sealing collar providing a smooth clean appearance. High grade steel provides superior strength which will not break or tear out compared to standard die-cast inserts. Zinc plating provides corrosion resistance for outdoor applications. Ideal for all wood and wood related construction . Recommended pre-drill is 12 (softwoods)-12.5mm (hardwoods), recommended to test on scrap piece first for best fit.