Tetras by frackenpohl thorsten from germany
designer's own words:
Tetras are a playful solution to avoid damage to heat sensitive surfaces in kitchen and at table. Just roll the porcellaine tetras like dices at any place you need and put hot pots or dishes on top. Due to the homogenous 4-arm construction the tetras will always stop in a stable position. When delivered or if not in use they can be stored in a suitable cotton bag.