Description:Insert Tool: automatic riveting machine, rivet bucker.Widely used in assembly of caravans, trailers, furniture, plastic-framed window body.The blind rivets are mainly used when access to the joint is only available from one side.The rivet assembly is inserted into a hole drilled through the parts to be joined and a specially designed tool is used to draw the mandrel into the rivet. This expands the blind end of the rivet and then the mandrel snaps off.Please allow 1-3mm errors due to manual measurement.Package Includes:40 x Blind Rivets.