These are the Voile DIY Split Kit Pucks (4) with 2-hole secure t-nut mounting. The pucks hold the Slider Track in place and provide the bridge for the 2 splitboard halves. The‚ Voile DIY Split Kit Pucks (4) include 8 M6 x 12mm truss-head screws, 8 M6 round bottom t-nuts, and 8 Petex discs to mount to the board half. You will need to have a split kit puck sticker template to determine the mounting position for your proper angles and stance width.