Adjustable crossbar size (popular):
RK-TDS610 6' - 10' TDS（stops at 8' & 10'）
RK-TDS712 7' - 12' TDS（stops at 10' & 12'）
RK-TDS814 8' - 14' TDS（stops at 10', 12' & 14'）
RK-TDS916 9' - 16' TDS（stops at 12', 14' & 16'）
Telescopic Uprights size (popular):
RK-TS610 6' - 10' Adjustable Upright，Two-Piece pipe & 4" pin & screw
RK-TS712 7' - 12' Adjustable Upright，Two-Piece pipe & 4" pin & screw
RK-TS814 8' - 14' Adjustable Upright，Two-Piece pipe & 4" pin & screw
RK-TS916 9' - 16' Adjustable Upright，Two-Piece pipe & 6" pin & screw
Base Plate size (popular):
RK-B1818-316-BK 18’’ X 18’’ X 3/16’’
RK-B1818-516-BK 18’’ X 18’’ X 5/16’’
RK-B1818-38-BK 18’’ X 18’’ X 3/8’’
