Tender For supply of ejector drill head dia 46.1mm as per specification no. hvf7000 00379 , ejector drill head dia 55.1mm as per specification no. hvf7000 00380 , ejector drill head dia 60.10mm as per specification no. hvf7000 00381 , ejector drill head dia 62.65mm as per specification no. hvf7000 00382