CarboTitanium 45mm blades are 8x harder than steel so they stay sharper, longer. Cuts up to 10 sheets of 20lb paper great for thick cardstock, plastic, photographs and more. Unique lever design for easy precise cutting. EZ-Change push button to release used blade cartridge. Secure locks at each end of the cutting rail hold paper to ensure straight cuts. Measuring grid in inch and metric for precise measuring and accurate trimming. Space to store spare blades. Manufacturer's 15-year limited warranty.