The MARSHALLTOWN Stainless Steel Safety Step Hand Edger / Groover is ideal for forming edges while creating a safety tread effect on steps. This tool has a 7” groove from the outside edge and is available in a wide range of sizes. A four groove Edger / Groover is available. This product comes fitted with a resilient soft grip DuraSoft handle. 4280D is used to cut four groves, 3/4" (19 mm) apart and 1/4" (6 mm) deep and an edge radius of 1/2" (13 mm)