I purchased the product to replace the tilt arm of the GKJr. by this 'A36', saving weight if useful or necessary.
Unfortunately, the allen key for the middle (=main) screw is not included, to remove the tilt arm.
It is completely incomprehensible to me why the most important utensil for using the product is not included in the delivery and will also not be delivered later on request.
In Europe, inch-sized tools can not been found on every corner.
As mentioned by another reviewer, they should have included an Allen key for the middle screw as it is larger than the rest
Brought this to convert the GkJr to side mount - making it smaller for my camera bag. One issue with this kit - they should have supplied an Allen key for the central screw in the original mount as well - as that one was much larger than the others.
After mounting and testing it - zero issues with the kit - it works.