Hex version freehub body with improved external seal Champagne colored I10PWY (September 2010) up to current, date codes. Six pawls , 2 pairs of 3 offset for a 7 degree engagement Hex shaped, press fit pawl carrier Steel coil pawl spring Oil based lubrication Bearing size MR17287 (17 X 28 x 7) X 2 Improved external rubber seal, no longer part of the freehub body (replaced by a metal seal ring), stays in the hubshell groove. 8 /9/10 speed compatible. Plastic shims to space steel and 10 speed cassettes away from the hubshell (included). Internal .5mm shim (not included) to space freehub body out to allow for the use of Sram XX* and Shimano10 speed cassettes. 98 Grams *Not compatible with Sram 1090, 1070, 1050, 1030 10 speed cassettes