Ridgid 50257 458MM Metric Non-Ratchet Flaring Tool The product is 50257 TOOL, FLARE 458MM The product use for multitool accessories This product manufacture by United States Recommended for soft materials such as aluminum and soft copper Will flare steel, stainless steel, hard copper, and brass thru wall thickness of .035 inches Sizes (mm) 4, 4.75, 6, 8, 10, 12, 15, 16 New ratcheting feed screw handle turns easily and requires less motion and effort than a standard handle Provides smooth, uniform flares with minimum effort