Pair of mini G-clamps 1" (25mm), almost unbreakable nylon construction, new, British made. 

1" is the inside gap between the black nylon jaws.  This size clamps up to 26.5mm with the red protective load-spreading foot removed, 16.5mm with the red protective foot in place, throat 40mm. 

Post free UK!  We always despatch quickly, but if you need the item fast we strongly recommend that you take the 1st class post option, as 2nd class can be very slow these days (often much slower than the 2-4 days they claim)  Next working day courier delivery option is available to England & Wales mainland only.