The OX Pro Dual Thrust Sealant Gun features cutting edge technology like our patented toggle switch to easily change thrust & stroke and our patented 360° Steel riveted rotating carriage. Its switchable ratio (12:1 / 24:1) function enables easy application of all viscosity adhesives and sealants. Twin heat-treated steel push plates offer greater strength and its nylon and fibreglass handle trigger with TPE rubber over mold are both impact-resistant. It features smooth thrust action, a rigid polymer handle for strength and durability and a 1.5mm steel push piston for dispensing up to 400ml cartridges. A steel pin on underside allows you to puncture dried caulk.