“Top Porous Stone, 4.0 inch Diameter x 0.25 inch (101.6 x 6.3 mm)” has been added to your cart. View cart Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Sale! Quick View Default Category, Permeability, Permeameter - Double Ring, SOIL TESTING EQUIPMENTTop Porous Stone, 4.0 inch Diameter x 0.25 inch (101.6 x 6.3 mm) $13.60 Original price was: $13.60.$6.97Current price is: $6.97. Add to cart