Mechanical pencil leads BIC Criterium 550 refill leads 1.5 mm, green, pack of 12

Refill leads for BIC Criterium 550 mechanical pencil, 1.5 mm thickness in green. Each refill has a length of 18 mm and the pack contains 12 pieces. These thicker leads are intended for tasks that require a bolder, more visible stroke than standard thin leads, and they are produced to deliver consistent line width and reliable feed when used with the BIC Criterium 550 refilling system.

Advantages

Green 1.5 mm leads provide a uniform and easily visible line suitable for marking, drafting and artistic sketching where thicker strokes are needed. The 18 mm length balances usability and compact storage inside the refill container. A pack of 12 ensures several replacement leads are available, reducing interruptions during longer sessions of writing or drawing. The formulation and diameter are matched to the mechanical feed of compatible pencils to minimise breakage and maintain a steady supply.

Suitable for

• Technical drawing and drafting that require thicker guideline strokes
• Sketching and shading where a bolder lead is preferred
• Marking and annotating documents or materials with a visible coloured line
• Classroom and office use when a durable, easy-to-see lead is needed

Key specifications

• Lead diameter: 1.5 mm
• Lead colour: green
• Lead length: 18 mm
• Quantity per pack: 12 leads
• Compatibility: refill system for BIC Criterium 550 mechanical pencil

How to use

Open the refill container and carefully insert a single 1.5 mm lead into the pencil's refill chamber following the pencil manufacturer's refilling instructions. Advance the lead gently to confirm proper seating and feed. Use moderate writing pressure appropriate for 1.5 mm leads to avoid excessive breakage; retract the lead fully when transporting the pencil. Replace leads as needed to maintain consistent line quality.

Usage recommendations

Store the leads in a dry, room-temperature place to prevent moisture-related issues. For best performance, use these 1.5 mm green leads specifically with BIC Criterium 550 or other mechanical pencils designed for 1.5 mm refills. Apply steady, moderate pressure during writing or drawing and avoid tapping the pencil on hard surfaces to reduce risk of breakage.