These needles are the proper length, and may not puncture the liners if correctly used WARNING: Products can't be returned or exchanged if liner is broken or punctured resulting from inappropriate inflation or needle use A flexible liner designed for various head styles delivers comfort and ease and stability Removable https://adultmediumspeedflex63494.popup-blog.com/30360599/riddell-speedflex-adult-large-things-to-know-before-you-buy