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Place of Origin : China
Brand Name : DZ
Certification : ISO9001
Model Number : DZ 8 1/2"
MOQ : 1
Price : USD160.00/pc--USD2900.00/pc
Packaging Details : standard export package, plywood
Delivery Time : within 7 days
Payment Terms : 100% T/T before shipment
Supply Ability : 100000
8 1/2" roller bits used on 1800mm core barrel drilling bucket.
1. metal sealed bearing
2. working time: about100 hours
3. IADC:637
4. suitable to hard formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marbel, etc.
5. competitive price
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8 1/2" roller bits/IADC637 Images |