Marshalltown 8" x 10" All Steel Walking GrooverThe MARSHALLTOWN All Steel Walking Groover is constructed from high strength, hard alloyed steel for superior durability when grooving joints in your concrete slabs. Its wide blade design helps to ensure that concrete will remain smooth. It comes fitted with an easy to see red guiding sight to help you create straight grooves every time. You have your choice of groove style, depth, blade size and radius size. All variations of this Walking Groover are