A regular screwdriver just doesn't work well on cap iron screws. 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. Veritas® designed this screwdriver to make it both safe and easy to remove, replace or adjust cap irons. It has 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 bubinga knob for a comfortable, secure grip. The slot-style tip is durable alloy steel. Not only for Veritas® planes, it fits all standard cap iron screws on current and vintage Record and Stanley planes as well as others based on them. A convenient tool for safely loosening or tightening stubborn cap iron screws. Made in Canada. Patent pending.