These needles are the right size, and may not puncture the liners if appropriately employed WARNING: Item can not be returned or exchanged if liner is harmed or punctured as a result of improper inflation or needle use A flexible liner suitable for various head shapes provides convenience and steadiness https://cesargiuxl.aboutyoublog.com/32700807/new-step-by-step-map-for-speedflex-adult-large