Bondhus 15389 - Hex Tip 9 T-Handle Set of 8 pcs w/ProGuard Finish. Bondhus' ProGuard Finish is a special corrosion resistant finish that uses Bondhus' special dry surface technology. Bondhus' ProGuard Finish is environmentally safe, provides better tool grip and is 5 times more corrosion resistant. Set Includes: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm. Comes w/stand..All Bondhus Tools are made with Protanium High Torque Steel, which is up to 20% stronger with more torque and twice the wear resistance of standard steel grades.