Bought a 10speed bike cassette online, went in Taunton store to collect, Box was broken and one of the sprockets was old and covered in dirt and grease, Obviously switched for a new one ,was offered the cassette with a sprocket from a higher spec 10speed cassette, And was assured it would be ok, asked if the nearest store 10 mile away had one ,was told yes , drove to collect it, Took it home to fit, only to find the box that it was in said 10speed but the actual cassette was an 11 speed , so would not fit ,returned it the following day to Taunton, The only option left was to purchase the cassette I was originally offered that I was assured was now correct for my bike as the used sprocket had been replaced, Took it home to fit only to find The 10 speed cassette contained two 11speed sprockets, So again totally useless for my bike, You honestly could not make it up. Complete joke, I will not be using Halfords again