I will not be using this riser block on my new mill so it is for sale. It's in great condition and comes with the 4 long bolts to install it using your original spider. Should fit most import mills and maybe genuine Bridgeports in the 9X49 to 10X50 range. I used it on my Ferro brand 10X50. Located in St. Albert and weighs about 75 lbs. You can verify fitment to your machine using the dimensions in the pictures. Asking $250