Mars Crew Exploration Rover

What there is most of

• Technic Pin with Friction Ridges Lengthwise with No Center Slots · Black×151
• Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot · Blue×106
• Technic Axle Pin with Friction Ridges Lengthwise · Blue×49
• Technic Axle 2 Notched · Red×37
• Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle · Dark Bluish Gray×36
• Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] · Black×35
• Technic Pin 1/2 without Friction Ridges · Light Bluish Gray×30
• Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] · Light Bluish Gray×26
• Technic Axle 4 · Black×23
• Technic Axle and Pin Connector Perpendicular Triple · Light Bluish Gray×21
• Technic Beam 2 x 4 L-Shape Thick · Light Bluish Gray×21
• Technic Axle 3 · Yellow×20
• Technic Pin 1/2 with Friction · Red×19
• Technic Axle and Pin Connector Perpendicular · Black×16
• Technic Beam 1 x 3 Thick · Black×16
• Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle · Black×15
• Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole · Black×15
• Technic Axle 5 with Stop · Reddish Brown×14
• Technic Axle and Pin Connector Angled #1 · Black×14
• Technic Axle 4 with Stop · Dark Bluish Gray×13

The twenty most numerous parts, longest bar first. Start a checklist to see all 290 part types and tick them off as you find them.