PyroShield 120 (HR T1 – 120 Deg C)PyroShield 150 (SHR T2 – 150 Deg C)PyroShield 200 (UHR T3 – 200 Deg C)PyroShield 250 (250 Deg C)PyroShield 350 (350 Deg C)Pyroshield 250 & 350 Grades, shall have a Fiber Glass shield , just above the tensile member, which shall act as a string deterrent, against through holes caused, due to red hot material.