Do you have 1.25 inch white star stickers?

I have included a link below to our available star labels. We do not currently offer a 1.25" star but we would be happy to create a new custom item for you. For more information you can contact Customer Support at 888-575-2235. https://www.onlinelabels.com/starburst-labels.htm

Are there parameters that can be entered in word: dimension, pitch spacing etc.. provided to layout and print words on the labels?

Yes, we do include the product specifications on the product page, just below the Add to Cart button. You can click on View More to see the horizontal and vertical pitch dimensions as well. Please note that Microsoft Word is unable to replicate the arrow shape so you'll see a grid of simple rectangles.