The Akiles Akiles iCoil-41 Manual Punch and Electronic Inserter can punch 15 sheets at a time. coil measuring guides, electric coil inserter, vertical punching, anti-dust cover, side margin control, coil crimper, and hardened punch die system. The coil measuring guide is a built in guide that lets you choose the correct coil size for the documents. The electric coil inserter is foot operated and improves the binding process. The vertical punching aligns the documents properly for punching. The anti-dust cover protects the machine from dust and dirt entering it. The side margin control correctly centers the punch. The coil crimper cuts and crimps the coil; this ensures that it doesn't spin out of the book. The hardened punch die system consists of individually cast-hardened and heat-treated steel punch dies that make the iCoil-41 perform maintenance free for a long time. The Akiles iCoil-41 Manual Punch and Electronic Inserter is an all in one solution.