Uses: Drafting and marking on wood. [Functions and Features] The knurling metal grip makes it slip resistant even when writing with a work glove. It grips the wick so it wont get caught while writing on the wood. Material: Shaft: ABS resin. Grip part: Knurling + chrome plated Mitsubishi Pencil Co., Ltd.) 0.08 inch (2 mm) lead Sharp HB is sold online by DCM Online. We also carry many other carpentry tools.