Please select size from the pull down menu. BSW Size Part # Inserts Per Kit Drill Size MM INCH 1/8-40 STK1/8BSW 10 3.40 #29 5/32 only * 8-32 UNC available 3/16-24 STK3/16BSW 10 5.00 13/64 7/32-24 only * 12-24 UNC available 1/4-20 STK1/4BSW 10 6.70 17/64 5/16-18 STK5/16BSW 10 8.30 21/64 3/8-16 STK3/8BSW 10 9.90 25/64 7/16-14 STK7/16BSW 5 11.50 29/64 1/2-12 STK1/2BSW 5 13.00 17/32 9/16-12 STK9/16BSW 5 15.00 19/32 5/8-11 STK5/8BSW 5 16.50 21/32 3/4-10 STK3/4BSW 5 19.80 25/32 7/8-9 STK7/8BSW 5 23.00 29/32 1-8 STK1BSW 5 26.00 1-1/32 1-1/8-7 STK1.1/8BSW 5 29.50 1-5/32 1-1/4-7 STK1.1/4BSW 5 33.00 1-9/32 1-3/8-6 STK1.3/8BSW 5 36.00 1-13/32 1-1/2-6 STK1.1/2BSW 4 39.00 1-17/32 note: The Sets include a High Speed Steel Tap, Inserts and Installation/Tang Break Off Tool. A drill is not included but the recommended size is listed. The insert length is 1.5 x diameter. For more information please visit: http://www.newmantools.com/recbri.htm