All items are genuine. I am selling these items because I am retiring from Mini 4WD. Please understand that these are used items. I want to sell everything, so I am selling them as a set!! If there's space in the shipping box, I'll include a few extra parts I have left over as a bonus♪♪ I think it might be difficult to see some parts in the photos, so if you leave a comment, I will post enlarged photos! - 19mm and 17mm black-treated plastic rollers - Some of the barrel springs and screws have been cut. - Some of the lock nuts have been used. - The pit box has signs of use on the exterior, but it can be used without any problems for its intended purpose. - There are also carbon fixing bolts from Sig Works. They are from several years ago, so the specifications may be different from the current ones, but they are very useful. - The check box has no cracks, but there are scratches in places. - Oils and greases include both unused and used items. - There are many unused brake sponges. A brake diagonal cut jig is also included in the set. Mini 4WD Mass damper Plastic rollers Grease Barrel springs Spacers Cold dye hot Grease Pit box Thunder Shot Mk.II Polycarbonate