OLP1244 Features: Single Row Standard Cup Grinders Blocks, medium-hard building bricks, paving slabs, concrete roof tiles and other medium hard materials Available in 4'', 5'', 7'' Arbor: 5/8'' - 11 Thread For fast stock removal Dry grinding Performance Tier: Chopper Dimensions: Dimensions: 4.5'' L x 4.6'' W x 1.5'' H