HHIP Pro-Series 3/4-inch Hex Quickie Double Vise Speed Handle Fits all vises with a 3/4-inch hex. Speeds up opening and closing of machine vises. Provides faster and more efficient production. Short turning radius for clamping of more delicate parts. Machined and anodized aluminum. Thumb knob locking screws allow the unit to stay locked to your vise during machining operations. Strong magnet on the backside of the body allows you to hang it from any metal surface.