1. High resistance body - it has been heat treated after casting

2. Outer diameter (running surface) - is the same as OEM rollers, 20% greater than any other brand in the aftermarket

3. Axle diameter - is the same as OEM rollers, up to 15% greater than most rollers on the aftermarket

4. Rollers weight - up to 30% greater than most rollers on the aftermarket

5. Finishing of rollers - done after welding, which leads to a perfect concentricity, eliminating any interior tension and thus any premature wearing

6. Bolt design - the rollers have full bolts, eliminating the possibility of deformation/breaking

7. CTHparts rollers always have 2 WELDING ROWS, compared to a single row, like most rollers on the aftermarket