Slide click. HB lead same as (hashtag) 2 pencil. 1 - 0.7 mm mechanical pencil. Comes with a cap to keep your eraser clean. Refill with Pentel PDE-1 eraser. Sturdy metal clip attaches to notebooks and pockets for safekeeping. Convenient side button propels lead for continuous writing without changing writing position. Latex-free fingertip grip for ultimate control and comfort. Protective tip design stabilizes lead to reduce lead breakage. 3.5 mm fixed sleeve length for drafting & stencil use. Don't forget! Super hi-polymer lead. Latex-free grip.