Features a quick change 1/4″ hex shank. Can be used on cordless drills with a max 1200rpm. Ideal for inddor and outdoor clearning. Compatible with Amtech V6505 and V6515 cordless power tools. Contents: 1 pcs x  50 x 75mm brush. 1 pcs x 89 x 125mm brush . 1 pcs x 100 x 75mm brush.