Applying to various material grinding granite, concrete, brick, speed is quick, efficient. Normal single row type diamond cup wheel:size: 4'' to 7''thickness: 5.0mm, 6.0mmbore: 20/M14/5/8''-11Applying to various material grinding granite, concrete, brick, speed is quick, efficient.other type and design can be accepted by your customers' requirement Normal single row type diamond cup wheel