Pin lugs  set of 20 for use with pin drive wheels .Forged , plated , uses torq tool included. Dimensions: outside diameter 0.745 inch 18.5 mm.  total length 1.2 inch 31mm 60 degree chamfer. 1/2 x 20 thread. For 45 degree see elsewhere in this section. For wheels with pin holes 0.755 to 0.760 diameter. Vintage adapters, most Superformance adapters use 60 degree , Most Trigo adapters use...