ITEM: 55 RC, Rockwell C Scale, Testing File SPI. MANUFACTURER: SPI. BRAND: SPI. MANUFACTURER PART: 987248. 55 RC, Rockwell C Scale, Testing File For Use with Most Bench Type Rockwell and Rockwell Superficial Type Hardness Tester (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Inspecting, Detecting & Testing Instruments. Testing Tools, Meters & Comparators. Hardness Testers & Durometers. Hardness Testing File Sets. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: SPIInspecting, Detecting & Testing InstrumentsTesting Tools, Meters & ComparatorsHardness Testers & DurometersHardness Testing File Sets.