Tender For bid to ras supply of drilling accessories e e -adopter 3 oblique 4 inch dia for coupling , pneumatic air hose pipe 20 mm heavy duty plastic type , hose clamp 3 oblique 4 inch set of 2 pcs with nuts and bolts , hose connecting nipple 3 oblique 4 inch , nipple for coupling 3 oblique 4 inch , washer for claw caupling 3 oblique 4 inch , y connecter , grinding wheel for grinding of drill rods , jackhammer repair kit pawal set for atlas copco jackhammer