Stable Safe Lightweight Long Working Stroke API Standard Hydraulic Drilling Jar. Bidirectional Drilling Jar: Dual cylinder bidirectional cone structure for stable delay and reliable performance. Continuous Force Adjustment: Bumper force can be adjusted continuously within the allowable range. High Reliability Design: One cylinder failure does not affect the operation of the other hydraulic cylinder. Optimized Slip Design: Improved slip design significantly extends the working life of the tool. Simple Operation: No torque or external adjustment needed; simply lift or lower the tool to release impact. Wide Application Scope: Suitable for drilling, coring, salvage, and well repair operations. ISO and API Certified: Holds ISO9001:2015, API-7, and API Q1 certifications for quality assurance. 100% Pass Rate: Strict quality management ensures every product passes inspection.