If you have ever had a timer plate stud (stand off) break off at the screw end in the gear cover, then you can realize the importance of a high quality pair These are machined from 17-4 stainless steel and are undeniably the very best available V-FACTOR High Strength Stainless Steel Pair Fits Big Twin 1970/1999 (except Twin Cam) & Sportster 1971/2003 .700" unthreaded section of stand-off length Replaces HD# 32606-82