AccusizeTools - 6 x 12" Fine Pole Magnetic Chucks, 2720-5000 Size: 6'' x 12''. Fine ploes: 1/8'' Poles, 1/16'' Separators Use Rare Earth Ceramic Magnets inside for superior holding power. Sealed against dirt and liquids. 1-5/8" very low profile to allow Max. work height clearance. Flat and parallel within 0.0002". Precision ground rails are included.