These needles are the proper size, and may not puncture the liners if correctly applied WARNING: Merchandise can't be returned or exchanged if liner is weakened or punctured resulting from inappropriate inflation or needle use A versatile liner made for a variety of head shapes supplies comfort and steadiness Removable https://paxtoncttcv.blogscribble.com/30870649/considerations-to-know-about-speedflex-adult-large