Precision ground and hardened, Durston Rolling Mill side extensions are made to the highest standard for superb results and give a lifetime of use. Please always read our Side Extensions FAQs before purchase. If you are in any doubt on compatibility please check with us before purchasing.
D Shape Groove Sizes
4mm x 1.25mm
3mm x 0.85mm
2mm x 0.6mm
1.5mm x 0.4mm
