A: The tubes with handles and door anchor are available in 3 levels of resistance. The GF-4TUB20 (Green) is approximately 20Lbs of resistance. The GF-4TUB30 (Red) is approximately 30Lbs of resistance and the GF-4TUB40 (Blue) is approximately 40Lbs of resistance.
A: This item would achieve an approximate resistance range of 0-40Lbs of resistance depending on usage method.
A: The GoFit GF-4TUB40 does come with a door anchor.