A12 single grip handle 52” overall
B1 straight back frame with logo channel
C6 nose plate 18” x 9” extruded aluminum,solid front mount
D5 wheel 10” x 3 1/5”  4 Ply Pneumatic, Sealed Precision Bearing

photo shows the hand truck with stair climber, the price is for the model without stairclimber, you can add stairclimber for $45.00