Cup-lock System Scaffolding and Components Standard ?8X3.25X3165 ?8X3.25X2565 ?8X3.25X2165 ?8X3.25X1665 ?8X3.25X1165 Standard End ?8X3.25X500 Ledger ?8X3.25X2400 ?8X3.25X1800 ?8X3.25X1200 ?8X3.25X600 Transom ∠50X4X1268 ∠50X4X762 Screw Jack with Base Plate ?8X708 Screw Jack with Swivel Base Plate ?8X708 Adjustable U-Head Jack ?8X708 Diagonal Brace 2400X3000 1800X2000 1200X2000 600X1500