Material and benefits 304 stainless steel rods offering good wear resistance and strength precision and corrosion resistance ensure longterm reliability Smooth surface that is easy to machine and maintain Size and dimensions Diameter × length: 18 × 100 mm, 18 × 200 mm, 18 × 300 mm, 18 × 500 mm, 18 × 800 mm Length options in millimeters: 100, 200, 300, 500, 800 Reference conversion: 1 cm 10 mm 0.39 inch Example conversions (approximate): 100 mm ≈ 3.94 in; 200 mm ≈ 7.87 in; 300 mm ≈ 11.81 in; 500 mm ≈ 19.69 in; 800 mm ≈ 31.50 in Uses and compatibility Widely used as gear shafts, motor shafts, short support shafts, shaft pocket models, and miniature axles Suitable for model planes, model ships, and model cars Storage and maintenance notes Storage and rust protection: apply a light oil during storage; reduce contact with air or avoid exposure to air to prevent rust Surface characteristics: smooth, easy to shape, and of cracks Practical use scenarios Scenario 1: Model plane or model projects Use as motor shafts or propeller axles and as structural axles for compact, reliable rotation in scale builds. Scenario 2: Small gear or mechanism assemblies Use as gear shafts or short support shafts in tight spaces to connect gears or transfer motion with precision. Scenario 3: Model cars and other hobby builds Use as axles or drive shafts for lightweight wheels and components in miniature vehicle assemblies.