The OX Pro Heavy Duty Sealant Gun 400ml is perfect for filling cracks or gaps with sealant. Made from a lightweight aluminium construction and featuring an intelligently designed rotating barrel which allows continuous clean beads with minimal effort in difficult to moneuvre spaces. The ergonomically designed dipped trigger handle supports the hands when applying pressure reducing fatigue and increasing comfort during extended periods of use. Fits sealant cartridges of 400ml.