Swix Stainless Steel Racing File: Extra Fine: 10 cm: 20 Tpcm World Cup Racing Pro file Extremely sharp, high quality file for edge geometry setup. Lasts ten times as long as regular chrome files Use for base and side edge tuning for routine maintenance and excellent performance New generation of files that reduces the need for second use of files for finish Stainless Steel File: Swiss Made100 mm x 7/8 inch (22 mm): Extra Fine (20 Tpcm)