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Shank Dia.=3mm, Compatible with 1/8" (3.175mm) collect and nut set.

20PCS Tungsten Carbide Burr Set, Shank Dia.: 1/8"(3mm), Designed in Germany, Manufactured by Germany and USA-made 6-Axis CNC in China, Packaging: 1 Plastic Box and 1 Paper box.

10 x Head Dia.: 3mm Solid Carbide, Overall L 38mm, 9 Flutes.

10 x Head Dia.: 6mm Brazed Joint, Shank Material 40Cr, Overall L 43 to 50mm, 14 Flutes.

Head Hardness: HRA90, Cut Type: Double Cut, Coating: Bright (Uncoated).

Max Rotation Speed: 140000 RPM(Head Dia. 3mm), 70000 RPM(Head Dia. 6mm), Direction of Rotation: Right Hand/Clockwise, Feed Direction: In general, burrs are used counter-rotationally or with a swinging motion. Pass the tool rapidly over the workpiece in the direction of rotation to achieve fine finishes or to achieve very smooth chamfers.

Burr Shape: End Cut Cylindrical, Ball Nosed Cylindrical, Ball, Oval, Ball Nosed Tree, Tree, Flame, Ball Nosed Cone, Cone, Inverted Cone.

Optimal Drive Tool: Straight, Angle Die Grinder, Flexible Shaft Drive, Robot. Average Drive Tool: Drill, Drill Press. Drive Type: Air or Electric.

Optimal Fix Type: 1/8 inch collect, Average Fix Type: Chuck.

Materials Applications: Hard Wood, Balsa, Wax, Soapstone, Slate, Marble, Granite, Concrete, Steel, Hardened Steel, Weld-Seam, Stainless Steel, Brass, Copper, Bronze, Aluminum, Cast Iron, Cobalt, Nickel, Titanium, Zinc, Earthenware, Terracotta, Porcelain, Fiberglass, Plastic, Rubber, Fiber-Reinforced Plastics and so on.

Burr Applications: Carving, Engraving, Sculpturing, Polishing, Deburring, Contouring, Chamfering, Milling, Cleaning, Porting, Cutting, Grinding, Elongating Holes etc.

�Ѳ��Գܲ���：1，Always wear ear, eye, face protection and protective safety gloves. 2，Generally, for rough work, move the burrs across the workpiece counter-rotationally. 3，Pass the tool over the workpiece in the direction of rotation to achieve fine finishes. 4，Min Clamping depth is 2/3 of the shank, if you have to clamp less, pls low speed. 5，If rough running, strong vibrations and increased flying sparks, pls use a new one. 6，Do not apply too much pressure, Let the speed do the work. Smaller burrs require faster speeds. 7，Soft materials, such as aluminum, use a grinding oil to reduce debris clogging. Grind glass, use water as lubricant. 8，Elongate holes, grip tool firmly with two hands and use a swinging motion, which prevents chatter, result in a safer cut. 9，Avoid impact loads, otherwise parts teeth will break off, shank will bend. Do not sink the burr for more than 1/3 of its periphery. 10，Recommendation for drives: shank 1/8" (75 to 300W), for coarse cuts, 1/4" shank burr and 500W+ drive are advantageous.