6" Bionic Grip Wrench, Will Not Strip Bolts, Fits 6 Sae Sizes 1/4" - 9/16" & 8 Metric Sizes 7mm - 14mm, Increases Gripping Strength, Can Grip Fasteners Damaged By Other Wrenches Or Pliers. Wrench Automatically Adjusts To Grip The Bolt On All 6 Sides Allowing Amazing Torque With Minimal Effort. Will Even Work On Stripped Bolts, Great Gift Item For Heavy D.I.Y. & First Time Tool Buyers, Lifetime Guarantee, Made In The USA.