Check the listing for details. Drive Torque Wrench Screwdriver Set Gun Gunsmith Instrument Tool Accurizing NEW. Condition: New. Listed at 61.12 USD. S2 alloy steel for max hardness. Crafted from hardened alloy steel and ABS resin, this ensures durability and a comfortable grip. All bits are coated with anti-rust oil to be corrosion resistant. Easy of Use: Pull down to unlock, rotate to set the torque value, then release to lock.