Konova has just announced a new K2 version of their popular sliders. If you follow Konova products, previously they offered a K3 (mid size) and K5 (larger size) video camera slider. The new K2 version and more affordable at $100 dollars cheaper than the K3, yet still based on the same roller bearing design with the same adjustable legs / feet.
Not 100% sure, but from the specs of the product listing it can also be used with their Crank Pulley Upgrade Kit, and other Time Lapse Controllers (like the Smart Motion). You can find the K2 and more information at the eBay Store.
Konova K2 Video Camera Slider