Tender For supply of adaptor nw pin to nq box 16 tc inserted nc adopter for box type nq bits,adaptor nw pin to nq box tc insert suitable for 16 tc inserted nc adopter for box type,adaptor nq pin to nw box hoisting suitable for hoisting adaptor,adaptor nq box to nw pin heavy duty suitable for rr bit adaptor,adaptor nq pin to nw pin suitable for water swivel adaptor