This is a set of Tamiya radio control car parts. I received these from an acquaintance a long time ago, along with a radio-controlled car, so I don't know the details. There are price tag marks, but everything is new and unopened. The set contents are as follows, one of each: ●TAMIYA RC PARTS HOP UP OPTIONS (Tamiya Hop-Up Options) ・OP-159 4mm Aluminum Collar Flange Lock Nut (Blue, 5 pieces) ・OP-421 04 Pinion Gear (42T, 43T) ・OP-525 3×18mm Titanium Turnbuckle Shaft (2 pieces) ・OP-706 TRF415 Low Friction Belt (Front) ・OP-825 TB Evolution IV Φ2.6mm Stainless Steel Shaft Set ・OP-826 TB Evolution IV Fluorine Coated Pillow Ball Kingpin Set ●TAMIYA RC PARTS SPARE PARTS ・SP-1103 TB Evolution IV C Parts (Front Upright) That's all. Type...Radio Control Car Manufacturer...Tamiya Type...RC Parts Radio Control Car...RC Spare Parts Radio Control Car...Hop-Up Options