Test Balls Test sample balls available in diameters of 20mm, 27mm, 40 mm and 48mm.Colour coded for easy identification, each ball contains a single test sphere.Sphere sizes up to 6mm diameter are available in:FerrousBrassPhosphor BronzeStainless SteelAluminium 請描述您欲採購的品項 取得估價或資訊請求資訊請求 eDemo/content/tw/zt/home/products/Product-Inspection_1/safeline-metal-detection/test-samples/ball.fb.1.c.11.html請給我估價單