Design Pro of Duluth, MN, offers an array of decorative block forms into which excess concrete can be poured. Versatile V-interlock, Knob-Style and Terra-Crete large landscape blocks are available in sizes ranging from 1/4 cu. yd. thru 1 cu. yd. With Design Pro's Quick Release Block Forms feature quick release clamps, welded-in rebar lift point insert and reinforced sidewalls on all six foot long forms to prevent bowing. Durable urethane rubber liners can create various rock and stone patterns and last for a minimum of 100+ uses under normal conditions. Simply place the liner into the bottom of the form before concrete placement and remove the liner from the finished block after stripping.