These measurements are based on the circumference of your head

Screen printed logo at neckline

Precision-hardened plier head for on-the-job toughness

shields and other PPE

Head is pinned to handle as well as epoxied to prevent head coming off

70553-SAE PRO FOLDING HEX KEY 31-KEY Cooling Products These measurements are based onPro Folding Hex Key Set with extended reach blades approximately 3 1 2 Inch to 4 1 2 Inch long for greater reach Includes 31 sizes: 3 32, 7 64, 1 8, 9 64, 5 32, 3 16, 7 32, 1 4, 5 16, 3 8, 1 2 inch, 1. 5mm, 2mm, 2. 5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12 mm, T6, T8, T9, T10, T15, T20, T25, T27, T30, and T40 Effortlessly adjust key tightness or looseness with the convenient #2 Phillips fastener High leverage blades open independently up to 270 degrees