Product specifications: The square product has a total height of 2.67 inches and a body width of 1.38 inches; it features an upper nut with a diameter of 1.65 inches and a tail hole measuring at 0.71 inches. Hexagonal products have a total height of also measures at 2.67 inches, with diagonal distance at 1.26 inches ,upper nut diameter at 1.65 inches, and tail hole at 0.47 inches.

Material composition: Crafted from excellent-quality 40CR alloy steel,this product achieves a hardness level up to 50HRC following appropriate heat treatment.

Product characteristics: Integrated formation ensures both high strength and excellent toughness,withstanding brittle fractures even under significant impact.

You will get: 1x ER-25 square chuck seat, 1x ER-25 hexagonal chuck seat, you will receive as shown in the pictures.

Note: Size error -/+ 0.039"-0.078", the actual size is subject to the actual object.