Paramedrau Technegol
| Deunydd: | Corff alwminiwm / dur | 
| Gorffen Arwyneb: | Pwyleg / sinc ar blatiau | 
| Diamedr: | 3.2mm, 4.0mm, 4.8mm, 6.4mm, (1/8, 5/32, 3/16,1/4) | 
| Wedi'i addasu: | Wedi'i addasu | 
| Safon: | IFI-114 a DIN 7337, GB, Ansafonol | 
 
                  
 






