3 DWV. INCREDIBLY FAST PIPE INSTALLATION. SUPER STRONG I BEAM DESIGN. STEM FINGER LOCKS PIPE INTO HANGER. EACH HANGER COMES COMPLETE AND READY-TO-USE WITH TWO, RING -SHANK NAILS PRELOADED ONTO THE STEM. SCOOPED TIP CRADLES PIPE DURING LAYOUT. CABLE TIE SLOTS CAN BE USED TO PERMANENTLY CIRCLE PIPE. NAIL HOLES SPACED FOR EASY CALCULATION OF DRAINAGE FALL. BLACK A.B.S. IS U.V. STABILIZED AND GLUEABLE.