Cup Lock Scaffolding is fabricated by ø48.3x3.25mm (1.90" O.D x 10 gauge) high strength steel tubes. It is a fully Hot Dip Galvanized multi-purpose steel scaffold system suitable for providing general access and supporting vertical loads. The key feature is its bowl locking point which allows up to 4 horizontals to be connected to a vertical in a single fastening action-making it probably the fastest and safest system available. Cup Lock Scaffolding Components: Standard, Ledger, Diagonal Brace, Side Bracket, Plank, Toe Board, Stair.