Precise Pro-Series Straight Shank Balanced ER-25 Collet Chuck - 3900-2092

• Made of 20CrMnTi alloy steel
• Electrolysis nickel coating
• Balanced to 18,000 RPM
• Tolerance: .0003" Maximum
• Superior finish and craftsmanship
• Premium hardened and all ground body for extended tool life.
• Superior Finish
• Nut style is spanner wrench.

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