Kollage Square Circular Needles and ChiaoGoo RED Lace Circular Needles are both similar needles: circular and US 11 (8.0mm) US size.
You may enjoy taking a look at the Berroco Comfort Calico Hill, Cascade 220 Lewiston Striped Vest, and Tahki Postage Stamps Tunic kits all using Clover Circular Needles.
If you like Clover Circular, then you may be interested in the different ways we've used them. Visit our Go Green! and Hat corners to see some ideas.