SLS SRB
SLS SRB by Orbital ATK: solid fuel rocket motor burning PBAN (active). Thrust 14,000 kN at sea level, 16,000 kN in vacuum. 242 s specific impulse at sea level, 268 s in vacuum, 730,000 kg loaded. Figures from the database's engine record. Drawn to the published length and diameter (Wikipedia); other proportions are estimated.