Single caliper head design is a SCOTT exclusive and it offers some key advantages. First, a single caliper release is simple there are fewer moving parts. Also, the flat side of the head tends to guide the string loop. A single caliper head is also more compact, and it gives you crisp activation and allows for generally lighter trigger settings. The Little Goose is standard-sized version of the Mongoose for those who like the time-tested design but need a standard-sized release. A SCOTT best seller!