An alternative to our own patterm makers dowels. These require a pilot hole of 13mm and a rebate of 19mm.
4 pairs of precision baseboard alignment dowels. These are considered by some to be easier to install.
Hard alloy, heavily passivated for zero corrosion means very long life, and the tolerances are so fine there is NO movement possible once they are installed. 2 pairs are enough to make two joints (Joins three baseboards together).