Mato King Tiger Metal Tracks Sprockets Driving Wheels idlers Set for Heng Long 3888-1 3888A-1 1 16 RC Kingtiger Tank Bearings

Upon opening the box and unrapping the parts in bubble wrap, I discovered that one stran of tracks were in two sections. One track link was broke and was of no use to me. I had to use one of the spare track links to affect repair and make the two sections into one. This is the only complaint I have about this product though it took some time to fix it. The other set of tracks were fine and the idler wheels and sprockets had no problems. The upgrade to my rc tank went well though it took longer to complete was due to lack of experience.As for my upgrade, the parts worked.