5.Bottom positioning design, card dot-dash positioning is more convenient.To be used with an electric drill, a multi-purpose machine and a wide range uses. 1.Made high quality aluminum alloy steel material, is rust, practical and sturdy. 2.Make wood drilling easier, straighter and more accurate. 3.With a scale, can better improve precision requirements work. Features: 1.Made high quality aluminum alloy steel material, is rust, practical and sturdy. 2.Make wood drilling easier, straighter and more accurate. 3.With a scale, can better improve precision requirements work. 4.Flexible and stable backing, backing can be installed on all sides, and is more convenient to move and use. 5.Bottom positioning design, card dot-dash positioning is more convenient. 6.To be used with an electric drill, a multi-purpose machine and a wide range uses. Specification: Material: aluminum alloy Size: as shown 1/4 Hexagonal Batch Head 1.5-10MM drill chuck Features: Innovative, Practical, Efficient, Accurate Package Included: 1pcs*Drill Locator. Note: Please allow 0.5-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to difference between different monitors, picture may not reflect actual color item. Thank you Features: 1.Made high quality aluminum alloy steel material, is rust, practical and sturdy. 2.Make wood drilling easier, straighter and more accurate. 3.With a scale, can better improve precision requirements work. 4.Flexible and stable backing, backing can be installed on all sides, and is more convenient to move and use. 5.Bottom positioning design, card dot-dash positioning is more convenient. 6.To be used with an electric drill, a multi-purpose machine and a wide range uses. Specification: Material: aluminum alloy Size: as shown 1/4 Hexagonal Batch Head 1.5-10MM drill chuck Features: Innovative, Practical, Efficient, Accurate Package Included: 1pcs*Drill Locator. Note: Please allow 0.5-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to difference between different monitors, picture may not reflect actual color item. Thank you