This is an attachment for the new Perfect Quon. M10×1.25 and M8×1.25 are also available. The new Perfect Quon doesn't have threads, so shift knobs couldn't be installed before, but you can install your favorite shift knob by attaching this mount. To install, simply cover and tighten the set screws. Male side: M12×1.25 Female side: Can be installed up to shaft Φ20. Up to 6 set screws are all stainless steel, so they won't rust and are durable. Dedicated hex wrench included. *If you don't need the hex wrench, we will deduct 200 yen, so please comment. Unlike iron materials, stainless steel is a hard material, which makes it difficult to process, but it has the advantage of being scratch-resistant, durable, and rust-resistant. This popular product has been copied, but this product is handmade by me, so the quality, material feel, and sense of weight are completely different from overseas-made products. Generally, products using iron materials that are in circulation will always rust from scratches even if they are coated or painted, so we recommend stainless steel. *Please install at your own risk. Shipping is anonymous, so you can rest assured. Other sizes for the male side can also be made. Please comment. Although it is carefully finished, it is made with a general-purpose lathe, so please refrain from purchasing if you are sensitive or seek perfection. #Dekotora #UD Trucks #Condor #Mitsubishi #MITSUBISHI #Nissan UD #Hino #Isuzu #Large Truck #One-off #Custom-made #Mission #Manual #Car #Motorcycle #Adapter #Extension #Order Made #Diameter Conversion #Diameter Change #One-off #General-purpose Lathe #Truck #Shift Knob #Isuzu #Fuso #Underwater Flower