That's a straight fitting that was installed to replace the 90 degree elbow fitting that came with the kit. I don't have it on hand right now but they are quite a bit larger.
I grabbed some of the cheap strap-type clamps on the way home from work but I also got a pair of the ear-type clamps from a 35 year old Superboot kit I don't trust to install because it's so old (the boot, not the clamp).