SIZE : 300 X 8 X 3.2 X 22.2MM MAX OPERATING SPEED: 5,100RPM, 80M/S MPA CERTIFICATE: 90506A FLAT CENTRE COMES WITH A REDUCER RING FOR 20MM NOT SUITABLE FOR CUTTING METAL OR VERY HARD OR VERY SOFT MATERIALS SUCH AS GRANITE OR CHALK DRY CUT ONLY FOR USE WITH CUT OFF SAWS CASE QUANTITY-10 NO INNERS PACKAGE DIMENSIONS FOR POSTING 31x34x1