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Hardened steel center cylinder and two slip-on caps; and one 1/4" (6.35 mm) 52-100 steel ball.
Optimize performance of your Cole-Parmer® Freezer/Mill® grinders with a wide range of vial sets suitable for your application.
Hardened steel vial set offers high durability and efficiency with moderate resistance to abrasion—suitable for general-purpose grinding.
Hardness: Mohs 5 ½ - 6; Rockwell – C 60-65
Typical composition: Major Element – Fe; Minor Elements – Cr, Si, Mn, C
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