We love these inserts and bolts! Needed to attach a butcher block top to our industrial crank iron table base. We were nervous wrecks - never did anything like this before. Didn’t want to destroy the new table top. After a lot of research, we knew we wanted the Rampa inserts and bolts. Emailed the few places that sell them in the US to make sure we were getting the right size. Not one response. Called Bear Hollow Supply and the gentleman was SO helpful!! Love the products, very happy with the service. Fast shipping. We highly recommend these Rampa products AND Bear Hollow Supply.