Brush Paint & Varnish ( Flat) Heavy Duty Size- 50 Mm Of Vulcanised Rubber Type To Is:384 (Part -1) /2023 (Sh Revision), Type Of Wood As Specified In Is:384 (Part -1) /2023 (Sh Revision) And Bristle To Is:1844/1993 Second Revision (Reaffirmed 2018, Amndt.-1) Quality Of Bristle Should Be Selected Quality As Specified In Is:1844/1993 Second Revision (Reaffirmed 2018, Amndt.-1) And Type Of Bristle-Type-B Semi Stiff As Per Approved Sample With Proper Marking During Bulk Supply.