Zebra DelGuard Original Anti-break Core Mechanical Pencil P-MAB85 0.5mm or 0.7mm

•Made in Japan

•Unbreakable lead mechanism - protect your lead

•Compatible with any brand of 0.5mm lead.

•Never worry about lead breaking again!

The DelGuard utilizes an ingenious two-part system that makes it virtually impossible to break the lead.

•First, a spring in the barrel of the pencil lets the lead slide back into the pencil instead of breaking if too much vertical pressure is applied.

•Second, another spring in the tip dynamically extends the lead guard to protect the lead when too much sideways pressure is applied. It may sound complicated, but it really works!

•And without the annoyance and interruption of breaking leads, you'll find your concentration greatly improving.

•Delguard system installed - Protect the core from all directions

•Vertical Force : 1. Upper spring absorbs writing pressure / 2. Prevents breaking by escaping the core upward

•Diagonal Force: 1. Lower spring absorbs writing pressure / 2. Tip jumps out and guards core

•Delguard protects up to the lead protruded by 4 times of press. If more than 4 times of press, the lead might subject to breakage.