Does the tip retract? I'm worried about putting it in my pocket.

It does not retract. I've got three of these for each jacket I wear so I don't worry about forgetting to take a pencil. So far no problems with the tip...

is the body and cap a metal material

No the body and eraser cap are plastic material. However the grip, the end cap, and the lead sleeve seem to be metal.

Do you need to buy a special kind of lead for it?

Any 0.5mm lead will work, but the specific Kurotoga lead is softer on the outside and is purportedly more effective with the mechanism. For very dark writing, I prefer Neox lead but it can smudge/smear a little. My second favorite is Ain Stein lead, which almost never smudges and lasts a little longer (not quite as soft as Neox).

How durable is this? I am a graduate student in EE and math and break so many of the best mechanical pencils from staples and other office stores.

I actually bought this mp to add to my mechanical pencil collection. I now have about eight mps, all different. Therefore, I could not provide any info regarding its durability. I can say that this is a beautiful, finely crafted instrument. It may be the best in terms of appearance. I really don't think you would go wrong if you selected this one. Best of luck!!

三菱鉛筆 uni Core Keeps Sharp Mechanical Pencil, Gun Metallic (M510171P.43)

Product ID: 249362452

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Details

Age range (description)
Adult
Brand
三菱鉛筆
Colour
Gun Metallic
Ink colour
Black
Writing instrument form
Mechanical

🔄Lead Rotating Tech

🖤Gun Metallic Body

⚙️0.5mm Precision Lead

Description

✍️ Write Sharp, Look Sharp – The Pencil That Works as Hard as You Do

STAY SHARP ALWAYS - Innovative Kuru Toga lead rotation keeps your tip perfectly sharp with every stroke.
COMFORT MEETS CONTROL - Soft grip ensures fatigue-free writing during long meetings or brainstorming sessions.
SLEEK DURABLE DESIGN - Gun metallic body combines style and resilience for a premium feel in your hand.
PRECISION IN EVERY LINE - 0.5mm lead size delivers crisp, clean writing ideal for professionals and creatives alike.
AMBIDEXTROUS RETRACTABLE - Designed for all users with a retractable tip for convenience and protection on the go.

The 三菱鉛筆 uni Core Keeps Sharp Mechanical Pencil features patented Kuru Toga lead rotation technology that maintains a consistently sharp 0.5mm tip. Crafted with a stylish gun metallic body and a soft grip, this retractable mechanical pencil offers precision, durability, and comfort for professional adults seeking a reliable writing instrument.

Specifications

ASIN	B004OHNTVC
Additional Features	Soft Grip
Age Range Description	Adult
Age range (description)	Adult
Animal Theme	no animal theme
Best Sellers Rank	#6,361 in Office Products ( See Top 100 in Office Products ) #43 in Mechanical Pencils
Body Shape	Round
Brand	三菱鉛筆
Brand Name	三菱鉛筆
Closure Type	Retractable
Color	Gun Metallic
Colour	Gun Metallic
Customer Reviews	4.7 out of 5 stars 8,658 Reviews
Drill Point	Medium
Global Trade Identification Number	04902778129494
Grip Type	Soft
Hand Orientation	Ambidextrous
Hardness	HB
Included Components	Mechanical Pencil
Ink Base	Water
Ink Color	Black
Ink colour	Black
Item Diameter	0.5 Millimeters
Item Dimensions	14.5 x 1 x 1.3 centimeters
Item Type Name	Uni Mechanical Pencil, Kuru Toga Roulette Model 0.5mm, Gun Metallic (M510171P.43)
Item Weight	14 g
Line Size	0_5mm
Manufacturer	Uni
Material	Metal Plastic
Material Type	Metal Plastic
Model Name	Mechanical Pencil
Model Number	M510171P.43
Recommended Uses For Product	Writing
Style	Gun Metaric Body
Subject Character	Kurutoga roulette model
Theme	Mechanical Pencil
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
Writing Instrument Form	Mechanical Graphite Pencil
Writing instrument form	Mechanical Graphite Pencil

Reviews

J**D

Best pencil

Best mechanical pencil

23.05.2025

R**E

Unique and elegant

My daily mechanical pen

1.02.2025

M**E

Broke after few uses

The pencil was really good but after a few weeks it broke and I couldn't use it

6.10.2022

P**I

Very good

The best mechanical pen in history I recommend you buy it.

18.08.2025

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