•d1 tolerance: h7
•The tool holder is through-hole, which is better for water to get through and anti-vibrant.
•The top of the tool holder has a design for taper, which can increase the rigidity.
• The pre-balance can reach G6.3 3,000 rpm, without the inspection report.
• The balancing grade and revolution can be done according to customer request but the additional charge is needed.