supply of ss wire brush 5 rows with wooden handle , ss wire brush 5 rows with wooden handle as per is: 4517/1986. specifications: 1.the steel w ire is to be made of stainless-steel material to grade 304 and of the diameter of the steel wire to be in the r ange 0.30mm to 0.355mm and length of each strand is 35mm, 75 holes in total and the density of strands i n each hole (tuft) is 18 nos. 2. the base wooden material (brush head) is to be of thickness 17mm, width 5 0mm and length of the brush head 180 mm and the overall length including the handle should be 300 mm. makes: vivek udyog or similar. [ warranty period: 30 months after the date of delivery ] ]