Product Specifications: * Shape: U-shaped minimal frame (hexagonal cross-section) * Material: A6063 grade aluminum alloy hexagonal bar * Hexagon side-to-side: Approximately 12mm * Head outer width: Approximately 70mm * Overall length: Approximately 159mm * Weight: Approximately 104g * Processing method: Grooves cut with a saw → Cold bending by hand, hammered finish * Surface condition: Since aluminum is soft, there are many scratches and processing marks. * Head groove: Edge chamfering and polishing are not performed, and the edges are somewhat sharp. It may damage flat rubber, so if you actually use it, be sure to perform processing such as filing yourself before using it. ※ Due to handmade products, there are some individual differences in dimensions and weight. Appearance and Scratches: * The hammered pattern is applied one strike at a time by hand, so there are variations in pitch and depth. * Aluminum material is soft and prone to clamp marks and scratches. Obvious burrs have been removed, but many fine scratches and dents remain. * Anodizing and painting are not performed, and it is positioned close to "processed material" and "semi-finished product." It is also suitable for those who want to re-polish, anodize, or paint it themselves. Flat Rubber Installation Image: 1. Lightly stretch the tip of the flat rubber to thin it. 2. Push the thinned tip into the back of the groove. 3. Push the part slightly behind it into the groove in the same way. 4. The folded-back part remains in front of the groove and acts as a stopper. I am an individual who does metalworking as a hobby, not a professional factory. There will inevitably be some roughness and individual differences in the finish. If you have any concerns, please ask questions in the comments before purchasing. Thank you for viewing.