Zeagle Pin Spanners are the ONLY Pin Spanners recommended for Servicing Zeagle Regulators. The 347-0001 pin spanner is made from high strength forged steel and has the right sized pin, pin angle and curvature to fit the diaphragm clamping ring on all ZEAGLE diaphragm regulators. Other universal pin spanners with pivoting heads, are not strong enough to work properly and will not engage the pin hole on the regulator properly. Any marks or damage caused by the technician using non-recommended pins spanners to service Zeagle regulators is not covered under warranty and will be the responsibility of the technician.