Prosnip/Bluebird 12" Tinner Snips have maximum cutting capacity. cold-rolled steel: 20 gauge (0.91 mm) stainless steel: 22 gauge (0.84 mm) Length of Cut: 2-3/4" (69.8 mm) Size: 12-3/4" (320 mm) PROSNIP tinner snips are built of hot drop-forged carbon steel for maximum strength PROSNIP blades are preicision ground for hollow and bow from the back to the tip of our blade, ensuring a tight grip on each cut and superior cutting quality. The blades are sharpened to an angle of 22 degrees, so as material is being cut it is being cleared. PROSNIP tinner snips handles are encased in Plastisol, ensuring confort for a long cutting time with less fatigue