General description The Drill Bit Extension Magnetic Holder Hex Shank for Bits is a versatile tool designed for quick changes and extensions of standard 1/4-inch hexagonal handle tools. This set includes three different lengths: 80MM, 120MM, and 140MM, making it suitable for various applications. The holder features a non-slip rubber sleeve for enhanced grip and control during use. Technical specifications Length options: 80MM, 120MM, 140MM Material: Galvanized Alloy Color: Black Measurement allowed error: +/- 1-3cm Usage The magnetic holder is designed to guide the installation of screws and control the shaking of long bits during rotation. It allows for one-handed operation of the electric drill while securely holding the rod coat with the other hand, making it easier to locate the bit accurately. Other information