10pc Tough Alloy Steel Burrs Bits Wood Working for Dremel Rotary Tool 10 Pc Alloy Steel Burrs Shank Size: 1/8 Head Size: 1/4" Length Size Approx: 1-3/8 Single Cut Assorted Shapes Include: Ball, Wheel, Flat Top Cone, Bullet, Tapered Flame, Round Tapered Cylinder, Cylinder Square, Inverted Cone