There is not much to say about this tripod socket. The delivery was faster than expected, only 2.5 weeks. The tripod collar fully meets its purpose, this. At an unbeatable price I could not fault it. Buying a Canon original Stativschelle you can save without problems. It's almost an outrage that the original Stativschelle Canon will cost about 100.00 euros, for me a fancy price. So good can not be a quality that they justify this price difference at this tripod socket. Should also be mentioned that the tripod collar also to the Canon lens L II USM 200mm F1: fits 2.8. This in my view has been mentioned yet nowhere, for me, therefore, an important piece of information. I use the tripod collar mainly for my Canon L lens 70mm-200mm IS USM f1: 4.0. For just 10.00 euros, as you do nothing wrong. I forgive 5 points for this tripod socket.