Wolf Garten Multi-Change Lawn Edge Iron - 22.5cm. The lawn edge iron works particularly well with the D-grip handle as it affords extra leverage when slicing through turf. As the D-grip handle is part of the unique multi-change system, it can be used with any other tool head in the multi-change collection, although there are certain tool heads that require extra leverage and are, therefore, especially suited to use with this handle (hollow tine aerator and the weed extractor, for example).