Trapezium Platform Trestles Sale! from 34900 $383.90 (Incl GST) /per Size Trapezium Platform Trestle 49cm Trapezium Platform Trestle 90cm Qty. Add to Cart Made from aluminium with a recycled heavy grade plastic platform. Ideal for use as a joining platform between play pieces, particulary to reduce the degree of difficulty. SKU: APT049P