... :Drill Bit Description of the product Size7 7/8"(200.0mm)ModelHA 737GIADC737WOB(KN/mm)0 ... TypeRubber Seal Sliding BearingTypeDrill BitAPI Regular Pin(inch)4 1/2 Cutting StructureLarge arc shape ... C, T/T, Western UnionMOQ1 PieceDelivery timeWithin 7 days but still depending on the quantity of ... 637G17 1/2444.5517G, 537G, 617G, 627G, 637G 7 7/8" Kingdream HA737G tungsten carbide tricone drill bit /three ...