Viking Drill and Tool by Norseman 34811 Quick-Release Set (12 Piece) 12 pc. Set Premium Hex Shank 1/4-inch Quick Release 135-Degree Split Point Set includes: 1/16, 3/32, 1/8-inch, 5/32, 3/16, 7/32, 1/4-inch, 5/16-inch, 3/8-inch 7/16-inch and 1/2-inch 1/4-inch Quick Release 135-Degree Split Point 12 pc. Quick Release 135-Degree Split Point 1/16, 3/32, 1/8-inch, 5/32, 3/16, 7/32, 1/4-inch, 5/16-inch, 3/8-inch 7/16-inch and 1/2-inch