Models LEGO TECHNIC Monaco Trossi engine 20 160 0 Ultem(R)ate Bracket C2 (0.021 lbs, 0.440 cu in) 5 17 0 Ultem(R)ate Bracket B2 (0.023 lbs, 0.481 cu in) 5 16 0 Ultem(R)ate Bracket C1 (0.018 lbs, 0.376 cu in) 9 64 1 Ultem(R)ate Bracket B1 (0.028 lbs, 0.578 cu in) 9 26 0