Collar Spear

Date: 18 Jan 2010
 The collar is a special fishing tool used to catch the fish whose top is a collar.It featutes that it can engage exactly the fish no matter when the collar is in larger casing annular space or in smaller pipe strings.
Contact information:
Tianhe Oil Group Co., Ltd
No.43,West Diming Street ,Mudanjiang City,Heilongjiang Province,China[157011]
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