A standard screwdriver never really works well on cap iron screws. By the time you find one with a wide enough blade it's generally a couple of feet long and unwieldy. A narrow blade can mar the cap-screw slot, and there's always the risk that the screwdriver tip will slip out of the slot altogether. This dumpy screwdriver makes it both safe and easy to remove, replace or adjust cap irons. It features a turned brass collar surrounding the tip to capture the head of a cap iron screw up to 21/32" in diameter, and a generous hardwood knob for a comfortable, secure grip. The slot-style tip is durable alloy steel. It fits all standard cap iron screws on current and vintage Record and Stanley planes as well as others based on them. Made in Canada.