The arms of the keys connect the key “cup” (which holds the pad) to the key hinge tube. A typical key has an arm that connects to the back side of the cup. French arms connect at the back and across the top of the key, ending in a nice point in the center of the cup. French arms are not found on the keys
that have openholes. Because French arm keys look elegant, they are sometimes dismissed as a cosmetic attraction. While the appearance is pleasing, my respect for this feature goes beyond aesthetics. French arms are indicative of a higher level of flute building. They require more skill, time, and precision. A company using pointed keys requires better technique for padding the instrument because the assembler cannot tilt the key to and fro to achieve a proper seal. The musician can play with a nice light touch because the arm takes the pressure of the fingered key and applies it directly to the center of the pad – not the back.