These rubber Bottle Openers & Knob Turners have a very simple, durable but effective design that helps the user to get a really good grip on awkward little items such as bottle tops, medicine bottles & small door knobs. Made from a high quality but flexible rubber, the Bottle Openers & Knob Turners have a ridged interior that gives a good grip on even the smoothest of surfaces allowing the user to undo or turn them with far less effort required. The openers will work on bottles & knobs with a diameter of up to 35mm 1.4"). Simple, durable but effective design Helps with better grip on small lids or knobs Ribbed rubber interiors grips items securely Reduces effort required to undo lids or knobs Ideal for bottle tops, medicine bottles or small knobs Maximum lid diameter: 35mm (1.4") Turner weight: 85g (each)