YOU ARE BIDDING ON A HEAVY DUTY GROUND ANCHOR. MOTORBIKE / CARAVAN / QUAD / TRAILER   THE ANCHOR SIZE IS 40mm x 40mm SQUARE. THE BASE IS MADE OF 30mm x 30mm.  THE LENTH IS 250 mm TOP TO BOTTOM. LENTH IN GROUND 210mm  THE HOLE THROUGH CENTER IS 34mm x 34mm   IT HAS WALL THICKNESS OF 3MM.    SO THIS MAKES THE ANCHOR VERY STRONG.  CONCRETE IN THE GROUND.  THIS ANCHOR IS VERY SECURE . check out our other anchors