Kollage Square Circular Needles and Clover Takumi Velvet Circular Needles are both similar needles: circular and US 10.5 (6.5mm) US size.
You may enjoy taking a look at the Rowan Drift Swaddle, Rowan Drift Mellow, Berroco Comfort Calico Hill, and GGH Gracia Cozy Pale Blue Sweater 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.