Drilling Jars

The ADT Hammer Jars are dual-acting, fully-hydraulic drilling jars that can provide up and down jarring blows of variable intensity to free stuck drill strings. Please refer to our DRILLING JAR MANUAL for a full description, specifications, and operating instructions.

Shock Subs

The ADT Shock Sub is a dual-acting, pressure-balanced shock sub with variable spring rates as required by the drilling environment. The jars shocks are available in 4¾", 6½", 8", and 9" outside diameter. Please refer to our ADT SHOCK SUB MANUAL for a full description, specifications, and operating considerations.

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