英国采购需求：钕磁铁、钕磁铁、小型钕磁铁、圆柱形钕磁铁、钕铁硼磁铁、Zing磁铁

I'm looking for a sample order for triangular Neodymium magnets that will fit in the V-gap between bicycle spokes. Key specs include an equilateral triangle shape with side lengths between 18mm and 22mm and a thickness of 5mm to 8mm. The material should be high-density neodymium with a layered nickel-copper-nickel coating for corrosion resistance. All units must have the same pole facing outward, providing a surface field of 4000-5000 Gauss and a max temperature rating of 80°C to ensure durability in varying weather conditions. The design should feature molded spoke channels along the inner edges to accommodate the thickness of bike spokes, allowing for a secure fit. Additionally, incorporate a simple micro mechanical locking mechanism for easy attachment and removal. Finally, ensure the magnet is fully encased, with one flat face flush with the outer casing for optimal performance. Looking forward to your response on this!