uxcell 7.3mm High Speed Steel Twist Drill Bit - Titanium Coated, 109mm Length, Fully Ground for Metal, Wood & Plastic Drilling | Perfect for DIY Projects & Professional Workshop Use

Installed in The Spring Chuck of The Spindle： When in use, the drill bit is installed in the spring chuck of the spindle. The clamping length of the twist drill on the spring chuck is 4-5 times the diameter of the drill shank to be clamped firmly. Check The Concentricity of The Spindle and The Collet and The Clamping Force of The Collet: 1.Poor concentricity will cause small-diameter drills to break and inaccurate hole diameters. 2.Poor clamping force will cause the actual speed to be mismatched with the set speed, and slip between the chuck and the twist drill. Check The Spindle Presser Foot: The contact surface of the presser foot should be horizontal and vertical to the spindle without shaking to prevent broken drills and offset holes in the drilling. Titanium Coated: Smooth cutting surface Advantages: Improve the cutting accuracy, improve the wear resistance of the surface of the object, and prevent the surface of the object from oxidation and corrosion Fully Ground: Integral grinding and forming. Advantages: Smooth groove finish, high hardness, wear resistance. High-speed Steel: HSS 6542 steel Advantages: High hardness, high wear resistance and high heat resistance. Twist drills can be clamped on Manual, Electric Drills, Drill Presses, and Lathes. Suitable for Wood, Malleable Iron, Aluminum, Plastic etc. Drilling holes must be kept clean, and coolant can be used for lubrication and cooling when drilling metal. Twist Drill Bit 1.2mm Twist Drill Bit 1.2mm Twist Drill Bit 2.5mm Twist Drill Bit 2.5mm Twist Drill Bit 3mm Twist Drill Bit 5.7mm Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.8 out of 5 stars 8 4.3 out of 5 stars 14 4.3 out of 5 stars 6 5.0 out of 5 stars 5 4.9 out of 5 stars 20 4.5 out of 5 stars 19 Price $9.39$9.39 $11.29$11.29 $9.99$9.99 $11.47$11.47 $8.49$8.49 $9.99$9.99 Twist Drill Bits Diameter 1.2mm / 0.05-inch 1.2mm / 0.05-inch 2.5mm / 0.1-inch 2.5mm / 0.1-inch 3mm / 0.12-inch 5.7mm / 0.22-inch Shank Diameter 1.2mm / 0.05-inch 1.2mm / 0.05-inch 2.5mm / 0.1-inch 2.5mm / 0.1-inch 3mm / 0.12-inch 5.7mm / 0.22-inch Total Length 38mm / 1.5-inch 38mm / 1.5-inch 57mm / 2.24-inch 57mm / 2.24-inch 61mm / 2.4-inch 93mm / 3.66-inch Drill Bit Length 15mm / 0.59-inch 15mm / 0.59-inch 25mm / 0.98-inch 25mm / 0.98-inch 27mm / 1.06-inch 50mm / 1.97-inch

[Package content]- 1 Pcs 7.3mm Drill Dia High Speed Steel straight shank twist drills.

[Strength and Hardness]- Made of high-speed 6542 steel, rock wall hardness grade HRC 63-66. With titanium coating treatment, it is reliable and durable.

[Professional and DIY use]- Suitable for hardened materials and hard metals, such as cast iron, hard plastics, and also suitable for soft materials. When it cannot penetrate, try to adjust the RPM.

[Twisted Design]- With a 120° angle point and twist design, it can increase the cutting speed through automatic centering; avoid displacement during the work process, and at the same time remove debris and particles faster and easier. The straight shank can be firmly fixed and accurately centered, suitable for standard drill chucks and conventional round chucks.

[Note]- Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage