Reddit reviews YXGOOD 10 Pieces Tungsten Carbide Double Cut Rotary Burr Set with 3 mm (1/8 Inch) Shank and 6 mm (1/4 Inch) Head Size
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Material: Tungsten Carbide, Shank diameter: 3 mm(1/8 inch), Cutting edge diameter: 6 mm(1/4 inch), Total length: 50 mm(2 inch).Please check the size before you buy it.Double cut head. Suitable for deburring and polishing cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials.Excellent for fine detail work, cutting, engraving, carving, touch-up and finishing.Processing all kinds of metal(including all sorts of hardened steel) and non-metal (such as marble, jade, bone), and the machining hardness can reach to HRC70.Generally use with handheld electric or pneumatic tool drive (can also be used in machine tool). The speed of the electric or pneumatic tools usually is 6000-50000 revolutions per minute.
clean bbs with a chisel and use a dremel with 1/8" shank burr bit to knock the ugly off the rest https://www.amazon.com/YXGOOD-Pieces-Tungsten-Carbide-Double/dp/B01MXURLTG/ref=sr_1_4?ie=UTF8&qid=1505753798&sr=8-4&keywords=1%2F8%22+shank+burr
I bought a cheap chinese set of carbide burrs from Amazon. $11
I used the cylindrical one with the round head to grind out two bolts that held the sway bar clamps on one of my W163 MLs. The bolt goes through the control arm and the two clamp halves and is a colossal pain. The head breaks off of the bolt almost every time.
Very time consuming and it takes a lot of pressure on the drill to make it cut but it worked great. I used a 2x4 as a level and was probably putting close to 100lb of pressure on the drill. Took forever but it worked.