What is the purpose of this reducing sleeve?

It allows you to fit MT 4 shank tools into a machine spindle with an MT 5 taper.

Which standard does this drill sleeve comply with?

This reducing sleeve is manufactured according to the DIN 2185 standard.

Is the drill sleeve hardened and ground?

Yes, it is fully hardened and precision ground for a precise, durable fit.

What are the internal and external taper sizes?

It features an external MT 5 taper for the machine spindle and an internal MT 4 socket for your tool.

INTERNATIONAL TOOLS 841000504 ECO PRO drill sleeve (reducing sleeve) DIN 2185 MK 5 to MK 4

Name: INTERNATIONAL TOOLS 841000504 ECO PRO drill sleeve (reducing sleeve) DIN 2185 MK 5 to MK 4
Brand: INTERNATIONAL TOOLS
SKU: 47290088
Price: 30.61 EUR
Availability: InStock

Supplier number: INTERNATIONAL TOOLS 841000504 | EAN 8716563290353

30.61 tax incl.

€25.30 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered tomorrow 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

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Precise reduction for Morse taper tooling

Practical benefits

Flexible machine spindle adaptation: You adapt MT4 shank tools seamlessly to MT5 machine spindles to increase your equipment versatility.
Accurate centering in operation: Manufactured in accordance with DIN 2185, it delivers true concentricity and reduces runout during heavy drilling tasks.
Hardened and ground finish: The fully hardened surface ensures exceptional wear resistance and dimensional stability under demanding workshop conditions.

In a nutshell

The right choise for

With the International Tools 84.100 eco pro drill sleeve, you can easily adapt MK4 taper shank tools into machines equipped with an MK5 spindle. This allows you to use your existing tooling across pillar drill presses and lathes without purchasing duplicate equipment. Manufactured in accordance with the din 2185 standard, this reducing sleeve is fully hardened and ground to deliver precise centering, minimal runout, and dependable wear resistance during demanding metalworking tasks.

Product information FAQ

€30.61

In stock - tax incl.

Key features according to our expert

Shank size: MK4
Shank type: Morse taper - external
Tool holder size: MK5
Tool holder type: Morse taper - internal
Standard: DIN 2185

Product Description:

International Tools ECO PRO DIN 2185 Morse Taper Sleeve (Reducing Bush) MT x MT
DIN 2185, completely hardened and ground

All Features

Shank size: MK4
Shank type: Morse taper - external
Tool holder size: MK5
Tool holder type: Morse taper - internal
Standard: DIN 2185
Norm: DIN 2185
Quality: ECO PRO
Shank (d2): MK 5
Total length (l1): 171 mm
Diameter ø (d1): MK 4

Brand INTERNATIONAL TOOLS
47290088
EAN 8716563290353
Supplier number INTERNATIONAL TOOLS 841000504

Frequently asked questions about this product

Answered by specialists

What is the purpose of this reducing sleeve?: It allows you to fit MT 4 shank tools into a machine spindle with an MT 5 taper.
Which standard does this drill sleeve comply with?: This reducing sleeve is manufactured according to the DIN 2185 standard.
Is the drill sleeve hardened and ground?: Yes, it is fully hardened and precision ground for a precise, durable fit.
What are the internal and external taper sizes?: It features an external MT 5 taper for the machine spindle and an internal MT 4 socket for your tool.