Amazon.com: HAUZSDISAINS 304 Stainless Steel Rods 5Pcs 3mm x 250mm/ 0.12"x9.85" Steel Rod, Metal Rod for Shaft. Metal Rods for Crafts, Rc Axles, Steel Bar, Metal Rod for Knife Handle Pins, Metal
Diameter 3mm - 38mm 304 Stainless Steel Rod Linear Shaft Metric Round Rod Ground Rod 100/200/300/500mm Long - AliExpress