The clamps are good in themselves, but have a much too small clamping range. The price performance ratio is limited. The information in the Webashop is partially faulty to the diameter. I can only advise a quick call and vote.
We use this type of collar in a common way with other suppliers with satisfaction. On the other hand, those purchased from SVB do not work Normally the screw of 6 crosses two cylinders in full stainless steel, but here, the cylinders are made of a simple folded sheet which is crushed when tightened. The worst thing is that they can't even be dismantled anymore because crushing jams the screw, and a grinder being unusable around a through-hull, it's a lot of wasted time. On the other hand SVB reimbursed those that I did not cut. I remain an SVB customer because usually I am always satisfied.
they are no longer the same collars, the trunnions were full at the front, which allowed powerful clamps all the interest of these collars when you tighten them hard now it deforms and damages the thread of the screw