Product Description Special stiffen steel tool tip with chromium harden coated Unified 18mm tool handle for better grip Special 4mm hole on the tool handle for screwing power enhance Hollow out handle for light weight Engraving tool tip size on the handle for distinguishability End cap is included as standard Precise manufactures by CNC maching Included Hex. Wrench 1.5x120mm / 2.0x120mm / 2.5x120mm / 3.0x120mm