The pu pump set 30 pack is a good quality set that is suitable for any kind of workout and also suitable for all situations these are built to last and can ensure a long life even in a commercial environment getting these as a pack is a kick starter for strength training in a gym key features of the pu pump set 30 pack 2 x 1 25kg 2 x 2 5kg 2 x 5kg 30mm hollow carbon bar 30mm quick lock collars solid non scratch pu with a central steel ring discs have 3 integrated ergonomic handles gi