Deunydd: HSS
Maint: 6-6.5mm, 6.5-7mm,7-7.75mm,7.75-8.5mm,8.5-9.25mm,9.25-10mm,10-10.75mm,10.75-11.75mm,11.75-12.75mm,12.75-13. 15.25mm ,15.25-17mm, 17-19mm, 19-21mm, 21-23mm, 23-26mm, 26-29.5mm, 29.5-33.5mm, 33.5-38mm, 38-44mm, 44-54mm, 54-64mm, 64-74mm ,74-84mm,84-94mm
Caledwch uchel.