... Bottom Anchor, Cup Seating, Rod Pump 5) RHT: Traveling Heavy Wall Barrel, Bottom Anchor, Rod Pump 6) RWA: Stationary Thin Wall ... Barrel, Top Anchor, Rod Pump 7) RWB: Stationary Thin Wall ... Rod Pump 11) THM: Heavy Wall Barrel, Mechanic Seating, Tubing Pump 12) THC: Heavy Wall Barrel, Cup Seating, Tubing Pump API 11AX sucker rod ...