This kayak-shaped sloper trio is perfect for building technical slabs or performing compression movements on pillars. For optimal grip, the structure is well-designed, and they can be attached using either a countersunk or hexagon head screw, or simply with wood screws. For attachment to wooden panels (with some space behind the panel), in addition to T-nuts, you will need: 1 piece of M10x50 grip screw, 2 pieces of M10x70 grip screw, 6 pieces of 5x40 wood screw (optional), or alternatively 13 pieces of 5x40 wood screw. Screws and nuts are not included.