Specification --- Wide Range Of Collet Sizes From 2-13Mm/0.04-0.51In, Suitable For Many Types Of Drill Bits. Diameter: 43Mm/1.69In; Length: 71Mm/2.8In; Connection Size: 1/2-20Unf; Specification --- Wide Range Of Collet Sizes From 2-13Mm/0.04-0.51In, Suitable For Many Types Of Drill Bits. Diameter: 43Mm/1.69In; Length: 71Mm/2.8In; Connection Size: 1/2-20Unf; Strong Clamping Force --- Its Unique Design Can Easily Convert The Torque Applied By The Handle Into A Larger Clamping Force, Hold The Bit Firmly And Securely, Not Easy To Loosen. Great Performance --- Keyless And Self-Tightening Type Design Is More In Line With Human Engineering. With Heat Treatment, The Product Has Good Toughness And Superior Structural Strength. Easy To Use --- Durable And Has A Long Service Life, Suitable For Long Time Work. Easy To Install And Disassemble, More Convenient And Economical. Have Good Metal Texture And Comfortable Coating Surface. Long Service --- We Strive To Provide You With High Quality And Convenient Service. You Are Welcome To Contact Us If You Have Any Problem With Our Product, We Will Give You A Satisfactory Answer.

Note:Shipping time is 5-12 days