Platinum Pro-Use 171 Drafting Mechanical Pencil

Customizable Japanese Drafting Precision in Matte Black

The Platinum Pro-Use 171 (MSDA-2500B) is a masterpiece of Japanese drafting engineering, built for professionals and artists who demand complete control over their writing experience. Engineered with Platinum's innovative "Snork System," this drafting pencil allows you to adjust both the lead sleeve length and the internal lead cushioning mechanism. Finished in an elegant all-matte-black profile with a knurled metal grip and weighted low center of gravity, it delivers unmatched precision and balance for technical drafting, architectural drawing, and everyday writing.

Key Features

• Adjustable Lead Sleeve (0–4.5mm): Rotate the nose cone to customize the guide pipe length for ruler alignment or retract it completely for pocket-safe transport.
• Switchable Lead Cushioning: Twist the knurled metal grip to toggle between a rigid drafting feel and a spring-loaded pressure-absorbing cushion that prevents lead breakage.
• Low Center of Gravity: Weighted front-heavy design (approx. 24g) provides steady line control and reduces hand strain during marathon drawing sessions.
• Precision Knurled Metal Grip: Finely machined matte black knurling ensures slip-free handling even under heavy use.
• Lead Hardness Indicator: Integrated window on the barrel lets you set and display your active lead grade (4H, 2H, H, F, HB, B, 2B).

Specifications

• Brand: Platinum
• Model: Pro-Use 171 (MSDA-2500B)
• Lead Size: 0.5mm
• Color: Matte Black
• Grip Material: Knurled Metal
• Weight: Approx. 24g
• Country of Origin: Japan

Frequently Asked Questions

How does the Platinum Snork System work?
The Snork System combines two adjustments: rotating the nose cone changes the extended length of the guide pipe (from 0 to 4.5mm), while rotating the grip section turns the internal lead shock absorber on or off.

Can the guide pipe be fully retracted?
Yes, twisting the front nose cone retracts the metal guide pipe completely into the body, protecting the sleeve from bending and preventing pocket tears.

What lead grade indicator options are available?
The built-in lead grade dial supports 4H, 2H, H, F, HB, B, and 2B grades for easy identification.