What has hands but can not clap?

Why this works

The riddle plays on the word "hands," which has a double meaning. In one sense, "hands" refers to the parts of a clock that indicate time (the hour and minute hands). In another sense, "hands" refers to human hands that can clap. The clever twist is that while a clock has hands, it obviously cannot clap like a person can, making it a fun and engaging play on words!