A reasonably light, well made set with internal cam.
The acorn nut, the one without the lever, is alloy, but it has a chrome steel face pressed on for better grip and durability. It also has a nylon insert to prevent loosening. The other end also features an alloy housing, however the lever and cam are chromed steel so they won't break when you over-tighten them.
For 130-135mm rear spacing; 100mm front. Sold as pairs, front and rear, only. 135g per pair.