Review on Woodstock D4231 2 Inch Quick Coupler by Jesse Azuse

They are more like quick couplers. The slightest jolt and they fall instantly. To hold them in place I used edge tape which is a bit more expensive than a dollar clip so it defeats the whole purpose of getting them. The screw feature for the 2 1/2" end worked fine, but I also had to re-tape them to hold them in place and seal properly. I won't be going with these again.