Our workshop sets provide a comprehensive selection of tool sizes, aimed primarily at the professional workshop environment. The sizes chosen reflect the most common sizes encountered in bike maintenance. The wind-out tool consists of two parts; an inner drift that matches the bearing ID, and an outer cup that should be selected to be 1-3mm larger than the bearing OD. The inner drifts and outer cups can be mixed and matched to suit a wide range of bearing sizes. Each tool is engraved with it's size for easy identification. A detailed description of our wind-out pullers can be found here. Each workshop set includes: Inner drift sizes 8mm, 10mm, 12mm, 15mm, 17mm, 18mm, 20mm (select to match bearing ID) Outer cup sizes 18mm, 21mm, 23mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm (select to be 1-3mm larger than bearing OD) Tough segmented organiser box Laminated instruction sheet (English default, other languages on request) 2-year no-quibble warranty Please allow 2 working days for dispatch.