ZipboltQT13.800KIT Straight Slip Fix Kit for Landing Applications

Do a test joint on some scrap first to get the hang of it before you go drilling your nice handrails... this is a good solution and one of those things that when you did it once next time round its much quicker, my tip don't use power drill on these! Just do it up by hand as my first test failed when the thread stripped off of the bolt not the nut side when I used my cordless and I was being careful too! The nut is hardened but not the bolt? Cordless drills can be set up on the torque function but really not worth it taking a chance doesn't take a minute to do it up by hand and ease the joint together...

This was a very good product for installing a handrail to newel posts at the top of my stairs. Instructions were clear enough regarding the marking out of the required holes. I did a practice go on an off cut of the handrail to make sure everything worked out correct.The only thing I would say is that quite a deep 25mm hole is required in the handrail to fit the tightening mechanism so be careful if your handrail is not very deep like mine was - I think it was a 35mm deep hole required. I purchased a 25mm flat drill to do the job but that had a long pilot tip on it which would have broken through the top of the handrail if I went straight to the required depth. Instead I had to start the hole with this, and then switch and use a hole saw (withouth the arbour bit installed) to get the hole to the correct depth. Then it was just a case of chipping out the plug of wood left from inside the rail.Fitting was a little tricky getting the pins aligned with the keyholes on the newels and I also had the spindles in place at the time, so a lot to align. Once everything was together, tightened the fixings and all a sucess. I was a bit wary of overtightening in case I stripped the threads though.Job completed and everything sturdy enough. I'm no carpenter but chuffed with how this all went!

Be careful before buying these. They are not suitable for low profile handrails as you have to drill quite deeply into handrail and you will drill straight through the handrails top if it is not deep enough. Luckily I bought these before ordering the handrail and practised fitting on my old low profile rail, and it revealed this issue.I addition, the 90 degree screw mechanism is not particularly well engineered and you have to use quite a bit of force to get a tight fit. I'm not surprised that another review stated he stripped the threads.I will persist with these as they give the effect I want and can always revert to other types of fixing if these end up not working as well as I want.

If you cross thread these you’re going to have a major problem. If you are minutely inaccurate with your marking out or drilling your going to have a major problem. These WILL NOT tighten up enough to give a secure joint that won’t spin round. I used these and 2 screws in addition. I’ve got a degree in Fine Craftsmanship and have worked in timber for over 40 years. Good luck!

This product caused an incredible amount of frustration that simply shouldn't have existed for something supposedly designed to make installation easier.Very convoluted instructions that could be made so much easier to understand with a few tweaks. The video on the website does not explain the important first steps in any level of detail whatsoever - which is a definite oversight.Followed the instructions to the letter, but this was still a nightmare to install. Getting both ends in at the same time requires an incredible amount of effort and at times felt impossible. Like others, the tensioner head is very flimsy and awkward to use. I can totally understand why some of these break during installation.Do not be under any illusion how much this product does NOT make an already difficult job more difficult.