FERROUS METAL CUT MATERIAL; CARBIDE TIPPED BLADE MATERIAL; 3-3/4 INCH DIAMETER; HEAT RESISTANT PROCESS; DIAMOND[TM] BRAND; APPLICABLE STANDARD ISO 9001; PIPE TAP SIZE 3-1/2"; SNAP-BACK ARBOR 2L; STANDARD ARBOR 2L, 3L, 6L, 7L; WARRANTY 90 DAYS