Thank you for viewing! This is a set of two manuals that detail how to customize Mini 4WD cars. I believe these are very valuable and rare now. ① Super 4WD Customization Manual Setting and Parts Guide for Winning Author: Takao Kameya ② Super 4WD Customization Manual 2 How to Build a Blazing Machine! Author: Takao Kameya In my opinion, these are in relatively good condition for used books from 1997 and 1998. They have been stored in a drawer for a long time. There are no writings inside either book. ① has a small tear on the back cover (image 5) ② has the last page peeling off (image 8) They will be packaged to prevent water damage and shipped via Yu-Packet Post. Please take a good look at the images and understand that these are used books before purchasing. Thank you!