uxcell Extra Long Twist Drill Bits, HSS 5.5mm Diameter, 300mm Length for Metal, Woodwork, Plastic, Aluminum Alloy (2

uxcell HSS(High Speed Steel) Extra Long Twist Drill Bits, 5.5mm Drill Diameter 300mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

uxcell Extra Long Twist Drill Bits, HSS 5.5mm Diameter, 300mm Length for Metal, Woodwork, Plastic, Aluminum Alloy (2

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. 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.

Key Features

• ✅ [Specifications]- Twist Drill Bits Diameter: 5.5mm / 0.22-inch; Drill Bit Length:200mm / 7.87-inch; Shank Diameter: 5.5mm / 0.22-inch; Total Length: 300mm / 11.81-inch; 2 x Straight Shank Twist Drill Bit
• ✅ [Strength and Hardness]- Made of high-speed steel. HSS(High Speed Steel) enables the drill body harder and can keep a longer drilling life.
• ✅ [Twisted Design]- With the twisted design, it can improve cutting accuracy by centering the tip. It can avoid displacement of the drill bit during work, and at the same time remove debris and particles faster and easier.
• ✅ [Professional and DIY Use]- Suitable for processing non-ferrous metals, such as copper and aluminum, and also suitable for hard plastics. When it cannot penetrate, try to adjust the RPM. Suitable for electric hand drill, bench drill and machine tool equipment.
• ✅ [Note]- Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.

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