GBP 57 A Polishing points, rubber-bonded Polishing points with standard aluminium oxide (A) in resilient rubber bonding. Application: For fine abrasion and polishing of steel, stainless and acid-resistant steel, high-temperature materials and non-ferrous metals. Polishing grinding points do not clog even when used on materials prone to clogging. For matt finish or application of visual effects on stainless containers etc. Due to resilient bonding of abrasive grit a very fine polish is achieved. Not suitable for sharp edges and rough surfaces. ​ 55 1850–​55 1924 ● ● ● ● ● ● ● ● ● ● 55 55 1850 55 1900 55 1920 55 1922 55 1923 55 1924 Head ⌀×head length mm 4×8 6×10 8×10 10 Polishing point grit 80 (grey) 55 1850 eShop eShop eShop – 10 51E coarse Polishing point grit 120 (red) 55 1900 eShop eShop eShop eShop 10 51E medium Polishing point grit 220 (brown) 55 1920 eShop eShop eShop – 10 51E fine Polishing point 280 grit (green) 55 1922 eShop eShop eShop – 10 51E very fine Polishing point 400 grit (white) 55 1923 eShop eShop eShop – 10 51E super-fine Polishing point 600 grit (orange) 55 1924 eShop eShop eShop – 10 51E ultra-fine Shape description cylindrical ball ​ Head ⌀ mm 4 6 8 10 ​ Shank ⌀ mm 3 ​ recommended circumferential speed m/s 10 – 15 ​ Head ⌀×head length mm 10×20 13×20 16×32 20×32 25×25 32×32 Polishing point grit 80 (grey) 55 1850 eShop eShop eShop – – – 10 51E coarse Polishing point grit 120 (red) 55 1900 eShop eShop eShop eShop eShop eShop 10 51E medium Polishing point grit 220 (brown) 55 1920 eShop eShop eShop eShop – – 10 51E fine Polishing point 280 grit (green) 55 1922 eShop eShop – – – – 10 51E very fine Polishing point 400 grit (white) 55 1923 eShop eShop – – – – 10 51E super-fine Polishing point 600 grit (orange) 55 1924 eShop eShop – – – – 10 51E ultra-fine Shape description cylindrical ​ Head ⌀ mm 10 13 16 20 25 32 ​ Shank ⌀ mm 6 ​ recommended circumferential speed m/s 10 – 15 ​ 336