2" x .85" Versa air stones are perfect strones for mos5t air pumps 4 watts or less. Perfect for hydroponic systems and aquariums a like,Qu;ality gauranteed 2" x 1" Versa air stones 6 packSKU: VA20858PKPriceFrom $6.40Excluding Sales Tax | Shipping policyquantitySelectQuantityAdd to Cart