This is a front arm kit for the Tamiya Lunch Box. ☆ This kit is designed to be installed on a stock vehicle without modification. (Please use your own judgment when installing on a custom vehicle.) ☆ Assembly and deburring work are required, so it is recommended for those who are confident in their work. ☆ The product includes only resin parts (without deburring). Please prepare the necessary screws, etc. Regarding the last photo: 〇 Front arm hole A φ3MM drill has been passed through. (Please let me know if you don't need this.) 〇 Front arm, red part Please file it round to ensure smooth movement. 〇 Red part of the upright If the inner side of the wheel bearing touches, please shave it down. Reference parts for installation: SP-592 5MM Pillow Ball OP-601 Low Friction 5mm Adjuster Upper arm etc. NO I think it's a good idea to buy and cut the Fun Work Series (Parts) No. 17 3mm Screw Shaft Set to match the length. Upper arm total length: 80mm including adjuster, 2 pieces Steering total length: 100mm including adjuster, 1 piece 80mm including adjuster, 1 piece Upright part screws: M3 screws 25MM 4 pieces M3 nuts with anti-loosening 4 pieces With this, you should be able to install it for now. There may be some insufficient explanations, so please ask if you have any questions. Strength and durability have been tested with a full stock (stock motor). It can withstand park driving and driving within common sense. (If the arm directly hits a metal pillar at full throttle, it will break.) In the summer heat inside a car, it will warp due to the heat. (Heat resistance is 52°C) Please do the simple finishing, deburring, and adjustments yourself. Although the product's strength has been increased, Please be careful not to strip the holes by overtightening the screws. Because it is a handmade product, It is not as high quality as store-bought items. If you are okay with that, please consider purchasing. Due to being handmade, there may be some errors and burrs, Please understand this before purchasing.