That’s okay! Many wand manufacturers have changed their wand designs slightly over the years and we’ve designed a glide for the different versions so that there is a precision fit. It’s important that we send you the correct glide the first time. If you’re unsure, send a picture of the front and back of the wand head, and trigger/valve assembly. That will help us to properly identify which wand(s) you have. You can send photos via text to (775) 552-5429 or email greenglidesusa@gmail.com