6SPEEDFREEWHEELBLOCKSCREWONCASSETTE14/28TEETHNONINDEXIDEAL70sRACERS,MTBNEW ALL BLACK6SPEEDNONINDEXFREEWHEEL(SOMETIMES KNOWN AS ASCREWONCASSETTEOR ABLOCK)SCREWS ON TO ALL STANDARD MULTI-SPEEDREAR HUBSWE STATE IN THE HEADING “SCREWONCASSETTE” BECAUSE SO MANY PEOPLE CALL THESE FREEWHEELS ACASSETTEBUT TECHNICALLY THEY ARE NOT ACASSETTEBUT AFREEWHEEL, IF IN DOUBT PLEASE ASKTHISFREEWHEELHASNONINDEXSHAPEDTEETHBUT WILL WORK WITHINDEXOR FRICTION GEAR SHIFTER LEVERS & DERAILLEURSIDEALFOR REPAIRS OR REBUILD OF ALL TERRAIN BIKES, TREKKING, ROAD , KIDS BIKES ETC ETCRATIO28/24/20/17/15/14(THIS IS NO OFTEETHON EACH COG )510grams APPROX