These needles are the proper duration, and may not puncture the liners if properly utilised WARNING: Products cannot be returned or exchanged if liner is ruined or punctured due to inappropriate inflation or needle use A flexible liner designed for numerous head styles offers ease and comfort and balance Detachable https://speedflexadultlarge46891.mybjjblog.com/the-single-best-strategy-to-use-for-adult-medium-speedflex-43967034