A spiral security ring is sold to match for Hydro Gear If you are not sure whether this ring fits in your gear, just write an email. If you have problems identify your gear, I will be happy to help you. I check that and then tell you Notice. For various hydro gear from Hydro Gear. This safety ring seated on the wheel axle and holds the cone tooth wheel Inner diameter about 15mm Foreign diameter about 17.8mm More Hydro Gear Spare parts on request. .
