Material: Steel Finish: Zinc Plated, Bright Chromate Pawl Position: B Slotted Flush Head Grip Range: 9.5 to 19.1 mm (0.375'' to 0.75'') Three hole mount An extra turn adjusts the amount of compression applied Operates by lifting the handle to relax the compression and turning to open Provides consistent, pre-set compression against environment or EMI/RFI gasketing Medium size compression latch Counterclockwise (Type B) rotation to latch