Product Description
ADJUSTING RINGMaterial - A2 stainless steel for increased corrosion resistance.
6mm & 8mm sizes Have M4 Grub screws which take 2mm allen keys.
10mm sizes have M5 Grub screws which take 2.5mm allen keys.
12mm sizes up to 20mm have M6 Grub screws which take 3mm allen keys.
30mm size have M8 Grub screws which take 4mm allen keys.
40mm size and above have M10 Grub screws which take 5mm allen keys.