These needles are the proper length, and will not puncture the liners if correctly used WARNING: Product or service can't be returned or exchanged if liner is broken or punctured because of inappropriate inflation or needle use A flexible liner suitable for a variety of head designs gives comfort and https://adultmediumspeedflex25000.iyublog.com/30264501/not-known-factual-statements-about-adult-medium-speedflex