Park tool head and steerer tube cutting tools in sets.Combines reaming and facing of the head tube to create a perfect fit for most sizes of head cupsincludes 30.1 Mm reamer and four different size pilots 29.8Mm 30.0Mm 33.8Mm and 36.8Mm will face frames of ec29 ec30 ec34 ec37 and will ream frames of ec30quick-release quick-adjust feature: bottom portion slides off and on easily without threadingshis standard is ec56
