Kingdream New 8 1/2" TCI Drilling Cone/Hole Opener/reamer bit/tricone cutters Cover All IADC:117,127,137,437,517,637,737 Metal sealed and o-ring sealed bearing 

1-API or ISO 9001:2008 

2-Delivery Date: In 7 days 

3-Delivery term: By air or by sea 

4-MOQ: 9 pieces 

5-Brand new 

6-IADC: following your requirement 

7-Packing: Wooden Case 

2- Products Specifications Reamer bit, hole opener bit, piling bit 

1. Used in construction and foundation 

2. Very large customized diameter 

1. Cutting Structure The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer. The pilot is three cone bit( tricone bit ). 

2.Seal and Lubrication High performance HNBR O-ring for bearing seal and advanced grease for lubrication. 

3.Product Application It is suitable for the large size well, mining and infrastructure applications. 

4.Main Availability, ( Bit sizes and cone types can be customized as you special order) Size Bit Type In. mm 28 711.2 117,127,517,,537,617,637 32 812.8 117,127,517,,537,617,637 38 914.4 117,127,517,,537,617,637 Please specify the following on enquiry, Bit diameter Drilling formation guide bit/pilot bit diameter cutters type Thread Connection