☆ How to Use ☆ Images 2, 3 Choose the ring adapter to use and insert it into the jig. ☆ Image 4 Pass the shaft through and turn the other jig to match. Basically, press one side at a time without washers, but you can also press from both sides simultaneously. Washers are included, so insert the washer on the concave side and press. (The direction of the washer's convex side is towards the gear) Be careful, as if the threads don't align properly and you turn them in a cross-threaded manner, the tip of the threads may be damaged, making pressing impossible. The amount of force varies from person to person; the more you tighten, the greater the holding force, but be careful not to overtighten, and be extremely cautious about damaging the tool or gear if you tighten only with the jig. Image 5 Gear (Brown) ① Set the adapter on the concave side. ② Pass the gear through the shaft, and place the crimping washer (2mm thick) with the convex side facing the gear, and the gear with the larger convex side facing the washer. ③ Insert the gear on the side where the adapter is inserted, and then press by matching and turning the other jig. Image 6 Gear (Yellow-green) (Press with the crimping washer without an adapter due to dimensions.) ① Pass the gear through the shaft, and place the crimping washer (2mm thick) with the convex side facing the gear, and the gear with the larger convex side facing the washer. ② Then, insert it into the concave jig, match the other jig, and press by turning. ☆ Through-Hole Jig ☆ This jig makes it easy to drill straight through the holes in Mini 4WD wheels. It is processed with a NC lathe and has been set for core adjustment, so the core is almost in the center. How to use it is simple. Place the wheel on a flat surface and set the jig on the neck of the wheel. Just insert a Φ1.8 pin vise drill and drill a hole. When drilling, it will be more stable if you lightly press the jig down while turning. Wheels with a wheel neck of 1mm or more are best, as shown in the 10th image. Please note that wheels without a neck may not be stable and may be difficult to drill. The diameter of the lower hole is Φ4.5, with almost no play, and the depth is about 5mm. The diameter of the jig is Φ10, and the length is 20mm. Returns, refunds, and claims are not accepted after purchase. We hope to have a pleasant transaction with each other. NOLLIE ROCKE is not responsible for any injuries or damage that may occur during use. Please understand. Returns, refunds, and claims are not accepted after purchase.