supply of brush bedding stone for carbon brushesbrush bedding stone for carbon brushes,brush bedding stone for carbon brushes to traction motor of m/s. mersen product no brssx0 5ms ( or) its equivalent in other makes as per the specification mentioned below. 1) size : 120 +/-3 mm x 28 +/- 2mm x 16 +/- 2mm, 2) grade : medium, 3) density : 1.78 g/cm cube. note: 1) firm must mention th e specific make of the offered material while participating in the tender, otherwise such offers are liable for rejection. 2) one sample must be got approval before effecting bulk supply. [ warranty period: 30 month s after the date of delivery ] ]