Adjustable Miniature Torque Limiting Screwdriver Specifically designed for tiny fasteners Largest model weighs only 1 oz. Accuracy +/-6% (right hand only) Model: TT-1 Range: 5-20 in-oz Increments: 1/4 10-oz Drive: Univ. Length: 3.625" (92mm) Weight: .06 lbs. (.03kg)