Purchase of 6x skips

We are seeking a tender for 40 cubic yard roll on roll off hook lift skips for our waste management operations. The skips must be durable and able to withstand heavy loads of various waste materials. The skips will be used for storage & transportation of any heavy industrial and agricultural goods such as; Soil, Bricks, Hardcore, Wood, Metal, Plastic, Large Bulky Items, Light & Heavy Construction Waste.