6 self-setting spanners with ratchet functionality For hexagon screw heads and bolts with sizes 7-32 or 1/4'-1 1/4' (imperial) and all intermediate sizes Automatically and continuously gripping hexagon screws and bolts Lever mechanism upon gripping prevents slipping and damage With mechanical ratchet functionality for fast and consistent screwdriving without removing the spanner Return angle of only 30° when using the corner-width rectangular prisms in the jaw Textile robust roll pouch