Multifuncional Overshot

: http://geotecdrill.com/2-core-drills/2-core-barrels-2.html

The multi-functional overshot is a fishing tool that integrates a fishing cup, fishing magnet and claw fishing basket to recover fragments and objects in the downhole. The simple structure, safety and reliability of the overshot make for high fishing efficiency and it is one of the most important drilling tools for cleaning well bottoms.

Specifications

Type	Barrel O.D.(mm)	Mill shoe O.D (mm)	Max catch size(mm)	Suitable hole size	Thread	Magnetizing weight (kg)
DLQ190	190	193	140	8 3/8"	NC50	800
DLQ200	200	203	150	8 3/8"~8 3/4"	NC50	1000
DLQ220	220	223	165	9 1/2"~9 7/8"	NC50	1200