ELECTRICIAN TYPE; BI-METAL MATERIAL; 10 PIECE(S); (6) BIT, (2) ARBOR, (1) PILOT DRILL, (1) ARBOR ADAPTER CONTENT; 7/8 INCH, 1-1/8 INCH, 1-3/8 INCH, 1-3/4 INCH, 2 INCH, 2-1/2 INCH HOLE SAW SIZE; SPEED SLOT[R] BRAND