Four double edged cutting/gripping sides with 8 points of contact to make non-slip engagement with the bolt/screw. Ensures removal of even the toughest bolts/screws. Supplied in storage case.Model NoAK752Contents:#1; 3.2-4.2mm(3/16"-1/4"), #2; 4.8-7.1mm(5/16"-3/8"), #3; 6.4-9.5mm(7/16"-1/2"), #4; 8.7-12.7mm(1/2"-9/16"), #5; 11.1-15.9mm(5/8"-3/4")Nett Weight:0.00Kg Set includes: #1; 3.2-4.2mm (3/16"-1/4"), #2; 4.8-7.1mm (5/16-3/8"), #3; 6.4-9.5mm (7/16"-1/2"), #4; 8.7-12.7mm (1/2"-9/16"), #5; 11.1-15.9mm (5/8"-3/4"). https://elecena.pl/product/27196579/sealey-ak752-screw-extractor-set-5pc-double-edge 2024-11-09 https://elecena.pl/product/27196579/sealey-ak752-screw-extractor-set-5pc-double-edge 2024-12-26 https://elecena.pl/product/27196579/sealey-ak752-screw-extractor-set-5pc-double-edge 2025-02-18 https://elecena.pl/product/27196579/sealey-ak752-screw-extractor-set-5pc-double-edge 2025-09-12