Review on SHINA Top Quality Tungsten Spherical Woodworking by Luis Thompson

Great little bit set. small learning curve to get consistently good beads. It is necessary to use clean material of sufficient thickness to cut both sides of the bead. You'll need to be careful to align the drill from side to side (it's best to set the center drill to fully pierce the material on the first side). Helps align on the other side. Also in case the ball stays in the drill. Be careful when removing, the blades are very sharp