Surface Grinding Segment Abrasive Material Ceramic Compatible Chuck ME30777 Cortland Compatible Tool Type Vertical Spindle Surface Grinder Grit 20 Overall Length 6 in Overall Thickness 2 1/4 in Overall Width 11 1/4 in Primary Material Applicationn Aluminum Cast Iron Nickel Alloy Stainless Steel Steel Titanium Tool Steel Specification QUANTUMX 20-G Wheel Type Type 31 Series Quantum X 5NQX