Tennis Court Tow ScarifierTennis Court Tow Scarifier This 48 inch wide heavy duty tow model scarifier is truly a workhorse for loosening the top surface on clay courts. It is especially good for indoor courts and sun baked southern courts (especially when there is calcium build up present). The unit is heavy enough to allow its two rows of case hardened nails to really perforate the surface. Staggered rows on each row prevents clumps Sized to fit between the alley tapes