Applicable hair: soaked and dry Thermal conductor product: environmentally friendly alloy Thermal conductor diameter: 16MM-20MM Temperature control adjustment: three sections These needles are the correct duration, and will not puncture the liners if correctly used WARNING: Product can not be returned or exchanged if liner is weakened or punctured as https://stephenrrqvw.full-design.com/riddell-speedflex-adult-large-fundamentals-explained-73322112