The chainring are for the large blade in a setup with 2 chainrings in front.

Absolute Black is really good on the market for oval chainrings.

The chainrings are made of 7075 aluminum and have then been anodized so that it has a nice black color. The color of teeth wears off when the chainring is used.

The oval chainrings are distinguished by the fact that your thread becomes more even, as they equalize the dead point you have when you have the crankset completely at the bottom and top. Here you usually have a hard time putting effort into it.

The ovality makes it easier to get over the dead point, but at the same time it also adds a little to where you are strongest, so you get the most out of your thread.

The chainrings have "grooves" that pull the chain from the small chainring up to the large one without any problems. For best results, Absolute Black recommends that you drive 53/39, 52/38, 52/36, or 50/34.

Other setups can also run, but the shift gets a little slower.

The chainrings fit Shimano crankset with BCD 110mm with 4 holes.

They are optimized for the new Shimano 105 R7000, Shimano Ultegra R8000 and Shimano Dura Ace R9100, but they can also easily be used with Shimano 105 5800, Ultegra 6800 and Dura Ace 9000.