To mitigate this, Randall J. Strossen developed the second version (V2) which featured a dark blue coloured handle.
Further developments were made and the third version (V3) was introduced with a dark blue handle which featured distinctive closed end caps contrary to the hollow cylinder of V1 and V2.
[4] Since IronMind, numerous other competitors have produced similar products specially following its flawed design with V1 and V2.
'Grip Genie RGT'[14] is known for being more difficult than IronMind V3 because it rotates more freely and rapidly due to less friction.
The world record with this is held by Carl Myerscough at 226.0 pounds (102.5 kg).