CGW triple reinforced high speed: cut off wheel. All 14-inches wheels are automatically balanced during manufacturing. All 14-inches wheels guaranteed to be less than 3 and 3.5 grams out of balance. CGW wheels are safer, cause less vibration and are more consistent. CGW uses heavy duty fiberglass reinforcement. Suitable for metal, steel and stainless steel. 20mm arbor hole size. Maximum operating speed: 5500 rpm. Grit: 24 (coarse). Grade: R (hard). Bond: BF (reinforced resin). Specification: A24R-BF TR. Type 1: straight wheel. Use for gas saw. Measures 14-inches diameter by 5/32-inches thickness.