Brand: Lisle Manufacturer's Part Number: 71670 Part Type: Thread Tap Sockets Product Line: Lisle Large Tap Sockets Summit Racing Part Number: LIL-71670 UPC: 083045716709 Socket Material: Steel Socket Finish: Black oxide Quantity: Sold as a set of 5. Notes: Set includes socket numbers 9， 10， 11， 12， and 13. Lisle Large Tap Sockets Lisle large tap sockets are ideal for use in areas where a T-handle just won't fit. These sets fit larger fractional M.C.T.I. standard taps， 5/8 in. through 3/4 in. They also fit 16mm and 18mm metric taps manufactured to M.C.T.I. standards. The socket sets feature one of each socket listed below and are contained on a vinyl holder for easy storage.Socket 9:* Fits 5/8 in. taps* Fits 16mm metric taps* 0.480 in. shank diameter* 0.360 in. square size* 1/2 in. driveSocket 10:* Fits 11/16 in. taps* Fits 18mm metric taps* 0.542 in. shank diameter* 0.406 in. square size* 1/2 in. driveSocket 11:* Fits 3/4 in. taps* 0.590 in. shank diameter* 0.442 in. square size* 1/2 in. driveSocket 12:* Fits 7/8 in. taps* Fits 22mm metric taps* 0.697 in. shank diameter* 0.523 in. square size* 1/2 in. driveSocket 13:* Fits 1 in. taps* Fits 25mm metric taps* 0.800 in. shank diameter* 0.600 in. square size* 1/2 in. drive