1-1/4 INCH MIN. HOLE SAW SIZE; 6 INCH MAX. HOLE SAW SIZE; 1.25 MIN. HOLE SAW SIZE - DECIMAL; 6 MAX. HOLE SAW SIZE - DECIMAL; 1-1/4 MIN. HOLE SAW SIZE - FRACTIONAL; 6 MAX. HOLE SAW SIZE - FRACTIONAL; HEX SHANK SHAPE; RIDGID. BRAND