● For tightening and loosening hexagon socket head bolts. ● Equipped with a T-handle for quick turning. ● Can also be used with a ratchet handle (6.35mm square). ● Can be used at an angle in narrow or hidden spaces. ● Can be inserted into the hexagon socket, reducing work time several times compared to conventional wrenches. ● Set Contents: ● Set Contents: 4, 5, 6mm, T-handle. Product Specifications BS-4: Hexagon socket head bolt 5mm, Hexagon socket set screw 8.0mm BS-5: Hexagon socket head bolt 6mm, Hexagon socket set screw 10mm BS-6: Hexagon socket head bolt 8mm, Hexagon socket set screw 12, 14mm HRC: 60 degrees ± 1 degree Quantity: Set of 4 Country of Origin: Japan Material: Chrome molybdenum vanadium steel