The rubber strap wrenches don't work very well for me. Both my filter strap wrenches use a seat belt like strap which won't stretch as much as a rubber one. Mine allows for a 1/2" drive, I use a large (long) extension with a 10" or longer ratchet. An 18" or longer breaker bar makes it an easy task if you have one. It took a realy long extension to give me enough room for a breaker bar, but a normal ratchet works after you break the first one loose. 
