The Co-Axial gun is designed to fit Anchorset Co-Axial Cartridges, the sealant gun makes it easy to apply sealants to the preferred area, any general builder could use this, the gun from Everbuild is very popular in the Chemical Anchors range with its easy pull trigger & smooth application the Co-Axial gun is the best way to apply the chemical anchors in a way suitable to you.