1-31-21**** BACKORDERED*** Pair of Pivot Tubes fits ST series plows Sectors. We make these in house. Fits Moldboard or Sector on ST plows. Fits Sector on C Series plows too. MUST BE WELDED IN. **WILL NOT FIT MOLDBOARD on C Series plows***. Same part as 07004, except it has the hole for a Cotter Pin. Click on Related Tab for C Series Rib Pivot tubes. Put away your micrometer, tolerances are not that critical and designed with wggle room. Remember, it is torsional force on this part, as long as it can trip, the trip absorbs most of the force. The only failure we have ever seen with a sleeve is a pin seizing in it. NEVER saw a sleeve ripped out, split, cracked, or torn, EVER. The amount of welds on each sleeve ensures that.