Product Review
diameter 3.0 =0.285mm 3.5 =0.310mm(standard) 4.0 =0.330mm(beginner) 4.5 =0.350mm
diameter 3.0 =0.285mm 3.5 =0.310mm(standard) 4.0 =0.330mm(beginner) 4.5 =0.350mm