Made of high-quality alloy steel, this tool features integral heat treatment for enhanced hardness, torsion resistance, and long service life. The surface is treated with advanced technology to increase durability and wear resistance. Equipped with an ergonomic rubber handle that provides a secure grip, reduces slippage, and ensures user comfort during extended use. High density design offers strength and reliability. Ideal for use with engraving machines, electric spindles, spindle motor extension rods, clamping nut rotation, and other similar applications.Product Name: ER Type Machine Tool Wrench Material: Alloy Steel Quantity: 3 Pieces Models: ER25, ER32, ER40 Color: Black and Red Package Includes: 3 x Wrenches Note: Other items not included. Due to lighting and display differences, actual product color may vary slightly from images. Measurement may vary by +/- 1-3 cm.