Precise 12″ Chuck Size Groove Width 21mm Best-Grip Hard Steel Jaws – 3900-4678

• 1.5mm x 60 Serrations.
• Set includes 3 pieces.
• Supplies maximum concentricity on finish turning operations.
• For use on: Kitagawa, Samchully, Strong, MMK, SMW, Autoblok, Howa & Hitachi-Seiki Chucks
• Chuck Size 12
• Groove width D is 0.827 (21mm).
• Screw size E is M16.
• Hole space F is 1.181 (30mm).
• 3 holes.
• 1 step.
• Step height S2 is 0.
• Step height S3 is 0.79.
• Width C is 1.97.
• Length A is 4.45.
• Height B is 2.05.

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