Strub has been recognized as high quality spindle oil suitable for high perfomance high speed milling spindles. Step-tec community has been well aware of Strub and have been favorite choice. Recently, Strub gained approval for Fischer Spindles for STRUB Vulcolube Clean HLP-D 68 and 46. This yet another validation of quality of Strub branded spindle oil. Please contact OTRA to find our more.