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

BIC Criterium 550 refill leads in green are replacement graphite cores designed for mechanical pencil systems that accept 1.5 mm refills. Each pack includes 12 individual leads with a length of 18 mm, providing a thicker, more durable line than standard thin leads. These green-coloured cores are suitable for writing, sketching and marking tasks where visibility and a bolder stroke are required.

Advantages

The 1.5 mm diameter offers greater resistance to breakage and produces a consistent, bold line suitable for heavier-handed writing or drawing. The pre-cut 18 mm length fits compatible mechanical pencil mechanisms, ensuring easy refill and secure seating. Green pigment increases contrast on light-coloured paper, helping marks stand out for quick identification without the need for ink.

Подходит для

• маркировки документов и заметок
• набросков и эскизов с более плотной линией
• работ, требующих лучшей видимости отметок
• учебных и офисных задач, где предпочтителен толстый стержень

Key specifications

• Diameter: 1.5 mm
• Colour: green
• Length per lead: 18 mm
• Quantity per pack: 12 leads
• Compatible with mechanical pencils designed for 1.5 mm Criterium-style refills

How to use

Remove the spent core from your compatible mechanical pencil and insert a single 1.5 mm green lead into the refill chamber according to the pencil manufacturer's instructions. Advance the lead gently to the desired length and operate the feed mechanism as usual. Replace leads as they are consumed; avoid forcing a lead through the mechanism to reduce the risk of breakage.

Usage recommendations

For smooth, consistent lines, use moderate pressure and advance the lead in short increments. Store the pack in a cool, dry place to prevent accidental bending or moisture damage. Use these leads with pencils specified for 1.5 mm refills to ensure proper fit and function.