Using these hose clips is easy. First, identify the hoses on your 2003 - 2007 KTM 250 or 300 EXC that need to be secured. Open the clip and place it around the hose at the desired position. Then, tighten it gently until it holds the hose firmly. Make sure not to overtighten as it could damage the hose. When it comes to maintenance, since these clips are made of marine - grade stainless steel, they're quite resistant to corrosion. But it's still a good idea to check them regularly, especially if your bike is exposed to harsh conditions. If you notice any signs of wear or damage, replace the clips right away. Also, keep in mind that these clips are designed to fit AS3 Performance and OEM hoses, so use them only with compatible hoses. And remember, the photos are just for illustration, so the actual clips might look a bit different.