This bit strictly adheres to the ISO 2380 hex standard, with side length tolerances controlled within ±0.03mm, perfectly matching M4-M6 screw slots to ensure a tight engagement. Its torque transmission efficiency is 20% higher than ordinary bits, stably delivering 15N·m of torque to effortlessly handle various screw fastening tasks. The main body is forged from one-piece S2 alloy steel, achieving a hardness of HRC58-62 after quenching and tempering, with outstanding wear and impact resistance—its service life is 2.5 times that of ordinary steel bits. The nickel-plated surface passes the 72-hour salt spray test, offering strong rust resistance and adapting to multiple complex environments. Some models feature a built-in strong magnetic ring (suction force ≥3N) to easily hold screws and reduce the risk of parts falling.

The unique anti-scratch design is this bit’s standout feature. The working end of the bit is wrapped in special soft material or finely polished to effectively cushion pressure upon contact with workpieces, preventing scratches and collisions to protect vulnerable materials such as electronic components and high-end furniture surfaces. The 6.35mm universal interface is compatible with mainstream electric and manual tools from brands like Bosch and DeWALT, and the quick-release snap design enables bit replacement within 0.5 seconds, significantly improving work efficiency. The anti-slip knurling on the shank conforms to ergonomic design for comfortable and stable operation, while laser-engraved specification markings and blue coding rings facilitate quick identification. From precision assembly in electronics production lines to installation and maintenance of delicate household furniture, the 1/4" hex anti-scratch bit meets diverse high-precision work requirements with its "precision, durability, and damage prevention" characteristics, making it an ideal tool for zero-damage operations.