Expansion insert, type B-Lok 841 and 842
Expansion insert with slot, type 841 and 842 for very hard materials.
Expansion insert in brass with slot that provides an easy to mount solution for low and middle performances. These are available in M2 up to M8 innerthread.
The version 842 has the extra advantage that in true holes of panels, they can garantuee higher pull-through performances thanks to the collar.