18 Piece Invisible Pot Feet Combo Pack A family company founded in 2008, Potrisers are still the original and the best recommended by leading gardening experts, journalists and keen gardeners across Canada and the USA. Beware of cheaper imitations. Potrisers prevent pot-skidding, staining and damage to decks and surfaces, hide drip lines, elevate fabric or plastic pots from saucers and prevent root rot/mold by allowing water to drain easily. Potrisers come in two sizes; Standard and Larger. This is our 18 piece combo pack of 6 Larger risers and 12 Standard risers. Made in the USA and Canada from 100% recycled vulcanized materials; Potrisers come with a lifetime guarantee. Potrisers are eco-friendly and indestructible and all claims have been tested under vigorous laboratory conditions. Twelve Standard 1" x 1" x 1/2" ht for smaller to medium pots support up to 1,600 lbs. Six Larger risers 2" x 2" x 3/4" ht for medium to large pots support up to 9,000 lbs. Potrisers are not recommended for use on vinyl or vinyl composite surfaces that are prone to be marked by other rubber products as well. Potrisers can be used to balance wobbly tables, level machinery, protect indoor floors from pots... the uses are endless indoor as well as outdoor!