TCT tipped bits can be resharpened. Set contains a selection of popular bit profiles. Smooth accurate cuts. Sealed bearings. 1/4" shank. Bits: 1/2" core box, 1/4" cove, 1/2" dovetail, 1-1/4" 45° chamfer, 1/2" flush trim, 5/8" straight, 1/4" round over, 1/2" straight, 1/4" straight, 3/8" round over, 1/2" 90° grooving, 5/32" roman ogee. Supplied in handy wooden storage case.