Hi! it said material type stainless steel. the one ive got it plastic. anyone alse the same ?

Are you sure it's plastic? To me it feels like a very lightweight metal, aluminium, perhaps. It's tricky because it has a plastic feel but is far too cold to be plastic. Does it really matter? This compass works excellently.

Can you attach the universal adapter onto the extension bar, so that you can use a pen at greater radius?

You can use the pen adapter at greater radius, but not in the way you suggest. The extension bar has a metal point (i.e. the centre of the circle) and attaches to one leg of the compasses. The universal adapter would be attached to the other leg of the compasses. So pens can be used for large circles, just not in the way you asked.

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📐 Draw your future with precision and style!

ALL IN ONE KIT - Comes with universal adapter and lead box, so you’re always ready to sketch, measure, and impress.
SLEEK DURABLE - Crafted from stainless steel with a contoured grip and housed in a stylish hinged lid case—tools that look as sharp as your work.
VERSATILE REACH - Extend your creative radius up to 395mm with the included extension bar—big ideas welcome.
PINPOINT PRECISION - Achieve flawless circles with 0.3mm line accuracy for professional-grade drafts.
EFFORTLESS ADJUSTMENTS - Quick setting centre wheel lets you lock in measurements in seconds—no fumbling, just flow.

The STAEDTLER550 02 Noris School Compass is a premium drafting tool featuring a centre wheel for quick, precise adjustments, interchangeable needle and lead parts, and an extension bar that expands your maximum circle diameter to 395mm. Made from durable stainless steel and housed in a hinged lid case, it’s designed for professionals and students who demand accuracy and versatility in their creative projects.

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Mounting type	Tabletop Mount
UPC	793187155853
Global Trade Identification Number	04007817550014
Manufacturer	Staedtler
Model Number	550 02 ST
Product Dimensions	19.99 x 2.11 x 10.39 cm; 140.61 g
Colour	Aluminium
Closure	Hinged lid
Grip Type	Contoured
Material Type	Stainless Steel
Number of Items	1
Size	1 Count (Pack of 1)
Point Type	Needle point
Line Size	0.3mm
Ink Colour	Rot
Manufacturer Part Number	550 02
Item Weight	141 g

STAEDTLER550 02 Noris School Compass with Centre Wheel, Extension Bar, Universal Adapter and Lead Box (350 mm Diameter)

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