COMMSCOPE's MS-SB50 Large Leg adapter clamp set for standoff bracket. Allows bracket to attach to an 4 in – 9 in OD vertical tower leg. Set of 2. Hot dip galvanized steel. Compatible Stand-Off Brackets: DM-100, S-200, S-300, S-400, S-500, S-600. Tower Taper: Non-tapered, Included: Clamp halves & Threaded rod