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Supply Ability:1000pcs/month
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ISO9001 Damping Spring For Interlocking Or Frictional Kelly Bar
Product Description
High Quality Damping Spring for Interlocking Or Frictional Kelly Bar
kelly damping spring
Damping spring is the accessories of the kelly bar parts. the function is to protect the kelly bar and damping , the material is 60Si2Mn .
It is easy to break during using kelly bar .Different kelly bar is matched different Model
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