PS OTT-BT/SK (PULL STUD) : BT/SK Pull stud with OTT system retention knob
  DesignationSSGD1D2D3LL1L2GICATGIREMgiic
  PS OTT BT40 M16 40 M16 25.0021.1017.0016.6056.028.004650702 0
  PS OTT SK40 M16 40 M16 25.0021.1017.0013.6053.025.004602257 0
  PS OTT BT50 M24 50 M24 39.3032.0024.0013.3565.025.004656108 0