RPM 20,000 RPM, For Use With Die Grinders 0.4 in, Mounting Type Shank, Arbor Hole Size No Arbor, Abrasive Shank Size 1/4 in, Wire Dia. Wire Wheel Brush, Wire Wheel Brush, Bristle Type Knotted Wire, Brush Dia.
Temp. 210 Degrees F, Auto Re-Seating No, Body Material Lead Free Copper Silicon Alloy, Body Width 2 5/8 in, Standards ANSI Z21.22, ASME, CSA, MIL-V-136-12D Temperature Pressure Relief Valve,150psi.