Why do clips occasionally break?

As male clips can be broken due to mishandling, please ensure male clips are not installed until the final fit. If installation is required off-site, we recommend the use of the PC-VM1, PC-VMX, LP-SMX or Very Low Profile Range. We recommend that you regularly monitor the diameter of the female hole drilled out by the CT-07. If it is less than 16.8mm, undue tension will be applied to the female part of the clip when screwed into place. This puts pressure on the male part of the clip which may cause occasional breakages. NB: do not use standard 16mm drill bits as these will cause breakages. When installing the panel, it is essential that the clip sets are aligned before firmly clicking into place.