The newly redesigned ATLAS® RIV939P pull-to-pressure tool has a 13% faster spin on speed and a 29% faster spin off speed than the previous tool. • Pressure controlled setting allows the installation of the same insert into various material thickness without any adjustment of the tool. • Pull-to-pressure feature extends mandrel life. • Mandrel is a hardened socket head cap screw which is easy to replace when necessary. • The auto-reverse feature after installation increases production rate. • Eliminates over installing and double installing ensuring fastener thread integrity. • Installs ATLAS stud series.