This is innovative and patented product, they are much smaller than normal riveter but with more
 multiple of arm force.  The riveter contains four size of nose piece 2.4mm, 3.2mm, 4.0mm, 4.8mm, 6.4mm and Cr/Mo Steel which can  deal  aluminium and steel(stainless steel)  rivet availably for almost 30, 000 times.