Suitable for use in flammable environments. - They have a 12-pt. - box end with additional grooves that make it easier to connect with the head of the fastener and connect at more angles for better accessibility compared to a 6-pt. wrench. - The opposite side has an open end design that allows top and side access to the fastener compared to the box end that can only access a fastener from the top. - These wrenches contain no iron, are nonmagnetic, and suitable for use with magnetic resonance imaging (MRI) equipment. - They have the same metric size on each end for use on one specific size fastener. Material / Aluminum Bronze Finish / Natural Number of Tools / 7 Range of Head Sizes / 8 mm to 22 mm Head Offset Angle / 15 Degrees Head Type / Offset Container Type / Tool Roll Measurement Type / Metric Head Size / 8 mm, 10 mm, 12 mm, 14 mm, 17 mm, 19 mm, 22 mm Opening Type / Rounded Opening Angle (Deg.) / 15 Degrees Non-Magnetic / Yes Nonsparking / Yes Corrosion Resistant / Yes Container Color / Blue Box End Type / 12-Point Box End Number of Point / 12 Range of Lengths / 5 5/16 in to 11 5/8 in Wrench Length Style / Standard Wrench Product Grouping / Wrench Sets Includes / Roll Pouch Standards / ASTM F2503, ASTM A342, FM Approved, NFPA Weight / 2.7 lb Handle Type / Ergonomic