The 700mm DD has a larger and wider profile allowing it to work in lighter soils. The ring width also results in more surface consolidation.
All DD rollers are delivered complete and assembled. You need to select from the sizes below to make up your overall required width. For example: if you are buying a DD ring roller for a 3m rigid cultivator you would buy a one 10-ring roller and one 11-ring roller giving you a total length of 3.13m. A 4m folding cultivator, if you are adding 600mm diameter rings would require two 9-ring axles to make up the complete 4m roller for your machine.