Not a great experience tbh. Despite a diligent effort by one of your employees . Order was frought with discrepancies and obstacles. When the order finally turned up (2 taper locking sprockets) the taper locks were missing, I didn't bother contacting SB due to lack of faith in their abilities. Honestly Bearing Boys are your best bet, I have ordered 10 times what I have from SB and never had any issues. Nick Newberry SGL