tender for set of brush for roots multi-scrub heavy duty scrubbing machine as given below:- 1) (mw12hdwb) 12 inch dia heavy duty brush (3 nos./set) - 20 set. 2) (mw12 mdwb) 12 inch diamedium duty brush (3 nos./set) - 50 set. note: each one sample to be got approvedbefore effecting bulk supply.