Doosan DX 530 Long Reach 18m with 3T counterweight and bucket

Lately, we've manufactured long reach arm for a Doosan DX530 excavator. The length of the arm was 18 metres. We recommended to use a counterweight as a rucksack. The whole order included a digging bucket and a hydraulic cleaning bucket. The buckets were completely made of steel Hardox HB 400. Besides the customer ordered a quick coupler CW40.