The best tool available for quick and accurate marking of dovetails. Supplied as a pair, a 1:6 for softwoods and a 1:8 for hardwoods. Both are 50mm(2") x 50mm(2") and made from anodised aluminium. The inside edges have an engineer's corner to ensure perfect seating, even over saw whiskers. The markers are designed to be easily flipped over for marking both sides of the dovetail. Colour coded for easy recognition. Tools you will never regret buying.