OverviewSpecsFAQsGalleriesResourcesReviews Product Description Cobble Stone Roller This roller makes an attractive cobblestone border. The roller stones are 7″ x 5″ and grout lines are about 1/8″. The roller comes with a heavy duty bracket with bronze roller bushings and a threaded bull float bracket attachment- for concrete handles. You can stamp curves with our rollers. Rollers reduce fatigue. Rollers allow you to start stamping earlier. Rollers decrease labor needed. Total weight is 24 lbs.