These needles are the right duration, and should not puncture the liners if correctly employed WARNING: Product or service can not be returned or exchanged if liner is harmed or punctured as a consequence of improper inflation or needle use A flexible liner designed for various head designs supplies ease https://adultmediumspeedflex84948.bleepblogs.com/31462522/the-2-minute-rule-for-riddell-speedflex-adult-large