Consisting of high quality aluminium alloy mandrel and 5052 grade aluminium alloy body, the countersunk head rivet is great for applications where the corrosion of a steel mandrel is not acceptable. Suitable for both the Professional Blind Rivet Tool (hand held: RTP-55) as well as the Scell-It 18V Cordless Blind Rivet Tool (power tool: RT-18VE5).