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07Q454 - Walter Quick-Step Flex 4.5 Inch Grit 40 Flap Disc

Packaging: 10 per each
$30.44/ea $194.10/10 per each only $19.41/eaSave 36%

Usually ships within 3-5 business days

OVERVIEW

Smooth Grinding on the Toughest Curves

Every welder knows the struggle of trying to blend a weld on a pipe or a rounded corner with a rigid grinding wheel. One slip, and you've gouged the metal, creating more work for yourself. The Walter 07Q454 Quick-Step Flex Flap Disc is the solution to that headache. With its unique flexible backing, this 4-1/2" disc hugs the curve of your workpiece, allowing you to grind down welds and blend surfaces seamlessly without fighting the tool. It’s like having a shock absorber between your grinder and the metal, giving you total control over the finish.

Don't let the "Flex" name fool you—this disc is aggressive. With a coarse 40 Grit rating, it eats through steel, cast iron, and hard alloys with ease. It’s perfect for bringing down light welds, deburring cut edges, or rounding off sharp corners. The difference is in the feel; the operation is incredibly quiet and virtually vibration-free. This means you can work longer with less tingling in your hands and less noise in the shop. The cool-cutting flaps also mean you won't scorch the metal, saving you from having to rework heat-affected zones.

This disc is a massive time-saver for anyone doing handrail work, vessel fabrication, or automotive bodywork. Instead of switching between a grinding wheel for removal and a fiber disc for blending, the Quick-Step Flex does it all in one go. It leaves a consistent, uniform finish that looks professional every time. Compatible with the Quick-Step mounting system, it snaps on and off in seconds, keeping your workflow smooth and uninterrupted. Upgrade your abrasive game and stop fighting the curves.

Additional Information
Brand:Walter Surface Technologies
Diameter:4.5"
Grit:40
Used To Grind:Steel
Packaging Description:10 per box
Backing Type:Flexible
Mounting System:Quick-Step
Application Surface:Curved, Irregular
Country Of Manufacture:Germany

INCLUDED

  • 10 x 4-1/2" GR40 Quick-Step Flex Flap Discs

APPLICATIONS

  • Blending and finishing welds on curved surfaces (pipes, tanks, vessels)
  • Deburring cut edges on steel and cast iron
  • Breaking sharp edges and rounding corners
  • Surface preparation on contoured workpieces
  • General grinding on tough steel, tool steel, and high tensile steel

FAQ

The main difference is the flexible backing, which allows the disc to conform to curved surfaces like pipes and tanks, preventing gouging and ensuring a smooth blend.

It is specified for use on tough steel, standard steel, cast iron, tool steel, and high tensile steel.

Yes, this is part of the Walter Quick-Step system and requires the appropriate Quick-Step backing pad for mounting to your angle grinder.

Grit 40 is aggressive for stock removal, but because of the layered flap design, it leaves a smoother finish than a solid grinding wheel of the same grit. It is considered a 'one-step' solution for many industrial applications.

Yes, the flexible backing provides a cushioning effect that significantly reduces vibration and noise compared to rigid discs.

This is a 4-1/2 inch (approx. 115mm) diameter disc.

While it can be used on flat surfaces, its primary advantage and design intent are for curved and irregular surfaces. A rigid disc might be more economical for purely flat work.

CATALOGUE & SPEC SHEETS

Spec Sheet
Safety Data Sheet