... Bits 1-API or ISO 9001:2008 2-Delivery Date: In 7 days 3-Delivery term: By sea/air ... clays, with high durability and maximum penetration rates. 2,Soft to medium formations(121,124,126,134,136, ... Piece Supply Ability 1000 Pieces/month Delivery Time within 7 work days SizeBit TypeIn.mm6152.4517G, 537G, 617G, ... 637G6 1/2165.1517G, 537G7 7/8200.0517G, 527G, 547G, 617G, 627G, 637G8 1 ...