The HAAS Short Velox is the same Velox as the original, only 2.5" shorter which is great for kids or shorter climbers.
The HAAS Velox is a one-size-fits-all, zero set up, efficient rope access tool. The snap is tied just above the ascender and will extract out 30 inches, which eliminates any set up, as well as any "dead spots" in the return action.