Four double edged cutting/gripping sides.
8-Points of contact to make non-slip engagement, the bolt/screw.
Ensures removal of even the toughest bolts/screws.
Supplied in storage case.
Contents: #1; 3.2-4.2mm, #2; 4.8-7.1mm, #3; 6.4-9.5mm, #4; 8.7-12.7mm, #5; 11.1-15.9mm.
Warranty: 1 year