Tender For corrigendum : supply of internal grooving tool holder dia 20 to widia ord no-6933711 610 with 50 nos inserts 44415820 tn4000 , set of internal grooving tool holder dia 16mm- cgxr 0016, with insert(1-3mm) gir5220-02-th10, qty- 50n , set of internal grooving tool holder dia 20mm-cgxr 0020, with insert(1-3mm) gir5230-02-th10, qty-50n