Titan 38" Backhoe Thumb Hoe Clamp 1/2" Steel Plate Assembly Weld On Adjustable Compatibility: Fits backhoes with buckets up to 38" (measured from the boom to teeth when the bucket is at 90 degrees) Quality: Thick heavy duty steel, plasma cut for tight tolerances Easy to assemble: Weld baseplate onto the boom. Pin on the thumb and gusset. Value: Pro duty 1/2" teeth bars and body assembly plates, teeth all along the edge, and 1" thick body support pin.