Reinforced aluminum oxide cutoff wheel for handheld angle grinders. The thin .040" kerf removes less material per pass, which means the grinder spends its watts cutting rather than pushing - a clean, fast slice through steel rod, threaded rod, sheet metal, EMT, structural angle, and rebar with noticeably less heat blueing at the cut than a standard 1/8" wheel.

• 4" outer diameter, .040" thin-kerf, 5/8" arbor
• 15,250 max RPM - matches a compact 4" angle grinder or pneumatic cutoff tool
• Type 1 (flat) profile for straight cutoff work, not grinding
• Premium aluminum oxide grain in fiberglass-reinforced binder for steel, stainless, cast iron, angle iron, rebar, steel studs, and sheet metal
• Lower amp draw than a thick wheel - the grinder holds RPM through the cut
• Manufacturer Part Number: DBD040040101F

Selection Tip: 4" is the right size for compact cordless grinders (Milwaukee M12, Makita 12V CXT, Bosch 12V), pneumatic 90-deg cutoff tools, and detail work in tight quarters - cutting bolts inside a wheel well, trimming threaded rod next to a fixture, slicing copper or thin-wall conduit between joists. The 5/8" arbor is the standard for small-tool spindles; do not try to fit on a 4-1/2" angle grinder (different arbor and lower max RPM).

Use Tip: Let the disc come to full RPM before contact, hold a steady angle, and use light pressure - pushing harder loads the disc and burns the binder. Cut on the back half of the wheel (not the leading edge) for the cleanest line, and never side-load a Type 1 disc; thin-kerf wheels are made for cutting only, not edge grinding.

Safety: Always use the guard, full face shield, hearing protection, and leather gloves. Inspect the disc for cracks before mounting; retire any wheel that has been dropped or that shows a chipped edge.