This ergonomic ratchet handle works with any standard 1/2" square drive socket (sold separately). The orange-and-black plastic handle offers great comfort. The unique push-through ratchet rotates in only one direction. To reverse it, simply remove your socket, push the square drive out the other side of the head, and reattach your socket on the other side. No more mistakenly reversing the ratchet by bumping a little lever! Even if you hold the head of this ratchet in the palm of your hand, you will not accidentally switch it. Extra-fine 72-tooth ratchet requires just 5 degrees of rotation.