These needles are the correct duration, and will not puncture the liners if adequately utilised WARNING: Merchandise can't be returned or exchanged if liner is broken or punctured as a result of poor inflation or needle use A flexible liner made for different head styles supplies comfort and ease and https://adult-medium-speedflex05369.ourcodeblog.com/30910247/the-definitive-guide-to-speedflex-adult-large