The Telescopic Inner Tube, an anti-jamming coring system, is a tool which reduces the chance of core jamming problem. It provides coring after the jamming problem occurs. Telescoping inner tube sleeves mitigate the effects of core jams eliminating unpredictable trips. This tool is producing to overcome core jamming problems, allowing the operator to stay on the bottom and continue coring. It is actively effective in high fractured formations. The RFI is also ideal to reduce the trips which are unacceptable cost.