Our knobs are full anodized aluminium with diferenz size – 30mm – 20mm – 18mm – 16mm , the hole it’s 6mm diamter .

Standard knobs have the O Ring for the maximum grip during the use ,  the O Ring it’s a deteriorating part but it’s ” life time warranty ” ( shipping cost not included ).

STAR knobs are full anodized aluminium and it’s available in this size 30mm – 24mm , hole 6mm diameter , available colors : Gold – Black – Brown – Silver . This knobs have double sceew closing .
Star knobs are mounted as a standard on SP3 model and as EXTRA in the other models.