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 4) from the design phase, where various molding conditions were tried and 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 features are the same and can be used without any problems. ・The filaments used are varied, including ABS/PETG carbon fiber. ・The colors are varied, including black and reddish-brown. ・Refer to the PTC series, which is listed separately, 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 some localized defects. Please check the photos for the specifications and condition. Since these were made with a 3D printer, there are individual differences such as layer lines and localized unevenness. Those who are extremely sensitive to the appearance are kindly requested not to bid. Returns and support are not available. Please bid with the understanding of the above.