Key Features Made from solid brass rod so are non-corroding Combined crosshatching and 2 slope face hold wood securely Side spring slides cleanly and holds it well Bench dog 110mm fit 19mm hole For benches with tops up to 50mm thick Ideal for use in bench sides Works well with Wonder Dog Clamps Made in Canada Description Made from solid brass rod. The crosshatching and 2 slope on the face help to hold wood securely, pulling it down onto the bench's surface. A side spring slides cleanly and holds it in position. The dogs are 110mm(4.3/8\") long, Work well in combination with Veritas Wonder Dog Clamps. For 19mm(3/4\") dog hole.