These borrow from the titanium chainrings I've done in 5 bolt patterns. They have the same swept look but work for the symmetrical 4 bolt 104mm bolt pattern. They have the classic double step design with the polished upper surface and beadblast teeth and back make this chainring immediately recognizable from a mile away. The durability of the aerospace grade titanium allows these chainrings to last thousands of miles without any issues while being less than 60 percent of the weight of one made of steel. They match the swept look of our spiders.