"The adjustable 178-254mm (7""-10"") heavy duty steel tines on the Ryobi AQTT-03 Cultvator Attachment allow for easy cultivating of narrow and wide beds and home gardens. The durable heavy-duty seated gearbox requires no maintenance and the large shield provides protection from debris. The tilling width can be varied without the use of tools. FREE DELIVERY NEXT WORKING DAY! RYOBI EXPAND-IT ATTACHMENTS HAVE A 2 YEAR MANUFACTURER'S WARRANTY AND CAN BE USED WITH ANY OF THE PETROL STRIMMERS / BRUSHCUTTERS LISTED ABOVE."