i want to make sure i am reading this correctly, it is 10 pieces, and EACH peice is 48 inches in length, so 480 in total? thanks

10 pieces, 48” each for total length of 480 inches

what is the width of each piece, not the length but the width? Not the package, but the width of each metal piece.

2020 stock is 20mm by 20mm. 2030 would be 20mm by 30mm. and so on. You need to be careful as this only gives you the gross external dimensions. The PROFILE may be different from one supplier to the another AND the purpose may be slightly different. For example, a "V" slot extrusion is specifically for a linear rail system. What you see here is specifically for a T slot hold dawn. In practice I've seen people use the different profiles interchangeably but performance may suffer.

Is it possible to bend these beams on the pipe bender so that the rollers can roll freely on them? A circle with a diameter of half a meter

It is unlikely you could bend it well. This is T5 meaning the hardened level. T6 is typically the maximum. The harness provides strength but makes bending difficult. With all the structure you may not get the channel fit that it has pre bend. If the bend radius is shallow enough you might be able to make it work. As a wild guess I would think it would be well under 10 degree bend. The anodizing also will not like being bent.

The description states european standard extrusion, which is 6mm? but it also states m5 at 5mm? is the slot 5mm or 6mm?

Slot width is 6mm. The M5 is in reference to common hardware that is compatible with this size extrusion but not a reference to the slot width.

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2020 T-Slot Aluminum

Product ID: 272090407

Details

Material
aluminum_6063
Brand
IXGNIJ
Item dimensions L x W x H
48.03 x 0.79 x
Color
Black
Shape
Rectangular

🔩6063-T5 high-strength aluminum

🖤Anodized smooth, sleek black finish

⚙️4-side adjustable T-slot grooves

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Description

⚙️ Elevate your build game with the sleek strength of 2020 T-Slot Aluminum!

BUILT TO LAST - Premium 6063-T5 European aluminum ensures unmatched durability and rigidity for your projects.
READY TO ROLL - Pack of 10 extrusions, each 1220mm long, giving you the perfect toolkit to build and innovate.
MODULAR MASTERY - Four versatile T-slot grooves compatible with M3, M4, M5 nuts for ultimate customization.
MULTI USE MARVEL - Ideal for 3D printers, CNC machines, workbenches, fitness gear, and more—engineer your dream setup.
PRECISION PERFECT - Smooth edges and anodized surface deliver a flawless finish and corrosion resistance.

This 10-piece set of 2020 T-Slot Aluminum extrusions features high-strength 6063-T5 European standard aluminum with an anodized black finish for smoothness and corrosion resistance. Each 1220mm extrusion offers four adjustable T-slot grooves compatible with M3, M4, and M5 nuts, making it perfect for professional-grade 3D printers, CNC machines, and custom automation setups.

Specifications

ASIN	B08PQQBHCB
Best Sellers Rank	#3,495 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Linear Motion Guides
Date First Available	December 5, 2020
Item Weight	12.52 pounds
Item model number	2020T
Manufacturer	IXGNIJ
Product Dimensions	48.03 x 0.79 x 0.79 inches

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