grinding disc 1.for concrete and other masonry materials 2.L segment Grinding Wheel With “L” SegmentsFor concrete and other masonry materials. Specially designed “L” shaped segments provide smooth surface grindingAvailable Size: ITEM NO.DIAMETERSEG. NOS.ARBORINCEMMGWCL044″100105/8″-11UNCGWCL055″125125/8″-11UNCGWCL066″150145/8″-11UNCGWCL077″180165/8″-11UNC grinding disc