Mechanical Pencil BIC 550 Criterium — refillable drafting pencil, pack of 12 (model 816092)

The BIC 550 Criterium mechanical pencil is a refillable drafting pencil supplied in a pack of 12. Designed for precise writing and sketching, this pencil features a push-button mechanism for controlled lead advance and accepts standard pencil leads. Its balanced barrel and reliable mechanism make it suitable for everyday note-taking, technical drawing and classroom tasks where consistent line quality and comfort are required.

Advantages

The pencil offers a refillable design that reduces waste and allows long-term use with replaceable leads. The push-button lead-advance delivers predictable, incremental feed for accurate strokes, while the pencil’s durable construction withstands frequent use. Sold in a pack of 12, it provides a convenient supply for offices, schools and design teams without the need for frequent reordering.

Suitable for

• Everyday note-taking and writing tasks
• Technical drawing, drafting and sketching
• School and classroom use for students
• Office work where consistent line width is required
• Studio or workshop sketching and preliminary design

Key specifications

• Product type: Refillable mechanical drafting pencil
• Operation: Push-button lead advance mechanism
• Compatibility: Accepts standard mechanical pencil leads
• Pack quantity: 12 pencils per pack
• Intended use: Writing, sketching, technical drawing

How to use

Load a standard lead into the pencil by removing the cap or pushing the mechanism according to the pencil’s design, then press the push-button to advance the lead to the desired length. Apply light, consistent pressure while writing or sketching to avoid lead breakage; replace leads as needed. Store spare leads and pencils in a dry place to maintain mechanism performance and prevent moisture-related issues.

Usage recommendations

For best results, use leads matched to the desired hardness for specific tasks (for example HB for general writing, softer or harder grades for shading or precise technical lines). Replace worn or broken leads promptly and keep a spare set of leads on hand to minimize interruptions during work or study sessions.