The Heavy Base Plate was designed to be used directly with our Aluminum Front Rest. It is made from 3/4" steel and weighs 40 lbs. The plate bolts to the aluminum rest feet from underneath the plate and uses its own leveling feet for adjustment. It also incorporates an integrated carry handle to help with transport. The gloss black paint finish is baked for added durability. Made in USA. *Rest in picture is not included.