宅配 Amazon.co.jp: 光沢鋼球、特殊鉄球、中実鋼球、7mm7.5mm8mm8 金属・合金

• No pollution, no release of harmful substances, non-toxic and pollution-free environment
• High hardness Hardness is 2 times higher than copper and 10 times higher than aluminum
• High-quality surface silver-white luster 10 years and 20 years as new
• Corrosion resistant nickel and chromium elements combined with acid and alkali resistance
• No rust, excellent oxidation resistance, no rust in humid environment

Material: Steel
Made of high-quality bearing steel, once again interpreting high-quality fine craftsmanship
Solid carbon steel is beautiful and durable hard material, more durable
Durable and non-deformable steel ball is not easy to be hot, durable and cost-effective
High-quality surface silver-white luster 10 years and 20 years as new
Whether standard parts: Standard parts