... lasers 1.Superior corrosion resistance 2.Stainless steel cooling channels Q-SWITCH1.A ‘Stallion’ version of our industry standard water ... : I-QS027-4S4G-N5-ST1 (Q-Switch, 27.12MHz, 4mm active aperture, shear mode, fused silica, 1064nm, 4mm OD straight push fit ... water-connectors, BNC, Stallion housing with M3 mounting holes Q-SWITCH