This is the drill I bought which clearly says In the catalogue listing SDS+, but on the packaging which of course I did not read until I got home it said SDS max.

https://www.screwfix.com/p/erbauer-s...-x-260mm/8558v

Since it is an SDS+ drill as listed it must have been incorrectly marked on the packaging . Thank you for pointing out the difference between the the two types of shank.

Richard