10.000 pcs of paint brush import United Kingdom

Hi , I want to get competitive prices for a polypropylene handle paint brush with silver coloured synthetic filling .these are used for fibreglass work. Quantities are 10,000 mixed sizes 1/2 “ through to 4” per week . Brushes are all 1/2” thick except 1/2” which are 3/8” thick.we would need samples for trial, thanks, Al*** R****