3M™ 391X Retractable Air Release Tool

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: Specially engineered portable tool to puncture film already applied to a substrate to remove entrapped bubbles.

Also used for intricate "weeding" of computer cut vinyl

Fits in your pocket just like a ballpoint pen

Has a springloaded pin that can retract when not in use.

"Pin holes" have been proven better than knife holes to relieve trapped air in vinyl wraps.
For more information on this product see video(s) below