BIRCHWOOD CASEY UNIVERSAL 2-IN-1 GONG HANGER FITS ON A STANDARD 2 X 4 LUMBER POST. HARDENED STEEL HOOK, HEAVY DUTY POWDER COATED FINISH AND INCLUDES SPRING WITH BOLT. ONE SIDE LARGE HOOK TO HANG A STEEL GONG. THE OTHER SIDE CAN MOUNT A STEEL GONG WITH THE INCLUDED SPRING AND BOLT FOR A MORE AUDIBLE SHOOTING EXPERIENCE.49052 – BIRCHWOOD CASEY UNIVERSAL 2-IN-1 GONG HANGER