bids are invited for procurement of drilling accessories mse bq core lifter , bq core lifter case , bq guide and locking coupling , hq guide and locking coupling , nq guide and locking coupling , nq core lifter , nq core lifter case , nq3 core lifter case , nq3 core lifter , hq3 core lifter , hq3 core lifter case , hq core lifter , hq core lifter case , thrust ball bearing 51115 , 6309 bearing , t8 bearing , t6 bearing , 3210 bearing , nq overshot latches with spring , bq overshot latches with spring , hq overshot latches with spring , nq inner tube latches , hq inner tube latches , bq inner tube latches , nq shut off valve , bq shut off valve , hq shut off valve , nq landing ring , bq landing ring , hq landing ring , nq stabilizer ring , bq stabilizer ring , hq stabilizer ring , wash pipe , water swivel packing 81mm , waer swivel packing , plastic for sump pit total quantity : 3896