1. The outer diameter of the brush body of the wire brush wheel and the coaxiality of the hole
2. Tensile strength of abrasive wire
3. Brush roller brush wire density
4. Normal service life of wire brush wheel
5. Whether the brush body loses wire
6. Surface finish, elasticity and water absorption of the suction roller
7. The materials used for the wire and body of the wire brush wheel
ECO quality: Wire brush is mostly supplied in DIY market,for those people who only use the wire brush occationly and make very small polishing and grinding. It has very fast speed, but life is OK.
Standard quality:It has good life, can cope with different situation, even very tough rust. Life is much longer.
Premium quality: For industrial use, extremely long time and extremely safe even used in very powerful machine. Also it can maintain very aggressive speed.