Attributes:* Total Length:135mm / 5.31"* Open End Size: 10mm / 0.39"* Box End Size:10mm / 0.39"* Material: Chrome Vanadium Steel* Finish: Black electrophoresis coatingWhat Is Included:* 1 Pieces x Combination WrenchApplications & Features:--- This one-hand tool can be applied in DIY hand-making, household maintenance, car, motorcycle and most general repair.--- Made of heat treated chrome vanadium steel for strength and durability. Black electrophoresis coating to resist corrosion, long lasting protection and resist corrosion.Useful Tips:--- Doubles the access angles of a 6-point to 12-point, 12 Point Combination Wrench is designed to grip flat sides of fastener heads, not corners, to prevent round-off.