+3 3/4″ Brass Slab Penetration 864 $100.00 In stock Quantity: 1 Add to Bag Product Details Get A Quote Now! 3/4" Brass slab penetration, to be placed in a concrete slab as it's being poured, and be grounded out to the rebar within the concrete. Typically used for water to go through the concrete pad, and to be attached to a pipe mount autofill. Typical height of these is 10 - 12". Save this product for later Favorite