I bought this lamp holder, because I had bad luck with two versions of well-known manufacturers. Both were equipped with plastic and screws or snap closures. These have broken down after repeated assembly. This holder is different. The central part is made of rubber and thus adapts better to the handlebar and the lamp. Can so easily slip by anything. Moreover, the cut-outs vary in size, depending on how it fits better. The Velcro straps are long enough to mount several lamps. I have tried it with a Fenix LD20 and a Zweibrüder LED-Lenser V2. They both fit perfectly. Even my LED bicycle light from Hella adapts it and is secure.
Conclusion: Variable, easy to handle and still favorable. So recommended!