This double sided sharpening stone makes touching up blade edges easy at home or in the field. Two high alumina ceramic stones are bonded together for a convenient sharpening system. Use the extra-fine (white) side for light touch ups on the edges and the medium (dark) side for a thorough resharpening when an edge becomes worn down or damaged. At 1”x5” and only 2.4 oz, carry one in your pack for broadhead and knife field maintenance.