Koh-i-Noor Mechanical Drop Clutch Lead Holder with 5.6mm x 80mm Lead, Green with Silver Clip, 1 Each (5321CN1003PK) Precision made with metal barrel and mechanical components Sharpener is built into the cap which simply screws and unscrews from the holder Lead is advanced or replaced by simply pressing knob in angled position Holds 5.6mm x 80mm leads Built-in metal clip