This is a case for Mini 4WD cars made with a 3D printer. It was ultimately completed as the PTC series, but what is being offered this time is a collection of prototypes (Part 3) from the design phase, where various molding conditions were tested. These are being sold in bulk at a bargain price, so please consider using them if you're interested. ・The details of the final product differ slightly, but the basic functionality is the same, and they can be used without any problems. ・The filaments used are various, including ABS/PETG carbon fiber. ・The colors are various, including black and blue. ・Refer to the PTC series, which is also on sale, for the basic specifications. 　Small item case 4 (2 pieces) ⇒ PTC1 　Brake sponge case (large 1 piece + small 2 pieces) ⇒ PTC2 　Small item case 8 (1 piece, bonus lid ※) ⇒ PTC4 (Lid is the same as PTC1) 　Nut case 12 (2 pieces, bonus lid ※) ⇒ PTC6 (Lid is the same as PTC1) ※: As a bonus, two slide lids (purple) shown in photo 4 will be included. ・Since these are prototypes, there may be local defects. Please check the specifications and condition in the photos. Since these were made with a 3D printer, there are individual differences such as layer lines and local unevenness. Those who are extremely sensitive to the appearance should refrain from bidding. Returns and support are not available. Please bid with the understanding of the above.