The SFERAX Type H.L. features a 100 Chromium-6 steel housing, hardened to 63 HRC, ground (lapped for quality grade A), a brass ball tray, and precision 100 Chromium-6 steel balls. The SFERAX Type H.L. is approved for wide temperature use, -30° to +200°C (without seals). Its three external grooves make mounting easy.