The OX Pro Dual Thrust Sealant Gun features cutting edge technology like our patented toggle switch to easily change thrust and 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.