Here begins the copy & paste from Digger's review: To Transform: Centre the crane arm & cab so the arm points forward. Fold the front of the vehicle down to form the legs. Stand. Fold out the arms.
Standard articulation for a Micromaster is present on the robot mode which isn't anything special lacking some of the extra moulding seen on other Sixteam members. The revealed legs and body are both an orange colour the same as that used for Digger's vehicle mode.
To form SixBuilder take Iron Lift's robot mode and sit it down by bending forward at the waist. The top of the toy is then locked onto the shoulder - Iron Lift is the left arm - and the left hand is attached. The hands can't be swapped round on SixBuilder, you're stuck with Iron Lift as the left arm.
Iron Lift's design is resurrected wholesale years later to make the Minicon Longarm.
Iron Lift was sold in Japan in 1992 in the Operation Combination TF-01 SixBuilder set.
Iron Lift swaps the white for red while the orange becomes yellow and the blue of the crane arm becomes grey. The red would seem to be influenced by the Build Team member Build Cyclone/Hightower who was also a red crane.
He comes with the left fist for SixBuilder which is moulded in the same yellow plastic as the body for Treader (the truck), but with most of the yellow obscured by dark grey paint.
Destron Iron Lift comes with the chase version of the left fist, but moulded in the same green as all the Micromasters in the set, that his Cybertron counterpart has.
Hightower comes with both of Devastator's fists. I look at these and see that they're mainly painted black with just the actual fist painted purple. Both colours are over the same green plastic as the rest of the toy. Examination of the earlier coloured SixBuilders shows that the fists are moulded on the same parts sprue as Treader/Longhaul so I can understand that they're moulded green. However on G1 Devastator both fists and lower arm attachments/launchers are purple. I feel the use of black here detracts from the combined Devastator toy and would be painting these PLUS SixBuilder's waist & gun, the shovel on Bonecruser, Scavenger's Excavator arm and Hightower's Crane Arm purple if my painting skills were up to it !