Magnetic Chuck Surface Length 10 in Surface Width 6 in Rectangular Avg. Max Holding Power 90 to 100 psi Magnet Type Permanent Ceramic Pole Alignment Transverse For Use With Surface Grinders Base Length 11 1/8 in Base Width 6 in Compound Style No Features Chucks are Lubricated and Sealed Against Dirt and Liquids Low Height for More Work Clearance