Made in USA BONDHUS Long Hex 10mm Short 180mm Long Black Oxide 48376 Tamper-Proof L-Wrench, [49mm End, End], Finish, No.

Country of Manufacture: USA Standard: 10mm Proguard processing is more than five times more corrosion resistant than general black dye processing. Tamper-proof hex bolts have a pin in the center of the part where the wrench is inserted, so they cannot be turned with a regular hex wrench. The intersection between the hex wrench and the bolt is set to less than 0.0127 mm, making it less likely to damage the wrench or bolt.