• SEAL TWISTOR is rapid and safe installing tool for flexible ROD SEAL.
• Size S : 22-30 mm Gland hole 0.7″-1.187″ | 5 mm Cross section max. 0.187″
• Size M : 30-50 mm Gland hole 1.187″-2″ | 6 mm Cross section max. 0.234″
• Size L : 50-70 mm Gland hole 2″-2.75″ | 10 mm Cross section max. 0.375″
• Size XL : 70-165 mm Gland hole 2.75″-6.5″ | 17.5 mm Cross section max. 0.687″

Gland hole must be in the range of sizes as the notes above. Otherwise, Twistor can be damaged permanently.