These are Mcgard premium lug nuts part# mcg-64014 they sell these at summit for 13.69 for a set of 4 I have 12 these are brand new never opened these were bought for my 03 silversdo but did not need them 25.00 + shipping.

Lug Nut Seat Style: Conical seat
Thread Size: 14mm x 1.50 RH
Lug Nut Finish: Chrome
Conical Seat Taper: 60 degree
Conical Seat Type: Standard
Wrench Size Required (mm): 22mm