SG15A -Diamond coating -Diameter of the tip end; 0.9mm

SG15B -Diamond coating -Diameter of the tip end; 1.3mm

SG15C -Diamond coating -Diameter of the tip end; 1.4mm

SG15D -Diamond coating -Diameter of the tip end; 2.0mm

SG16A -Diamond coating -Diameter; 2mm

SG16B -Diamond coating -Diameter; 2.6mm