1 Pair 4mm Banana Plug to Test Hook Clip Lead Unshrouded Cable Gold Plated For Multimeter/Equipment

Approx cable length is 90cm (total length tip to tip is 1m)

The leads are reasonably flexible but I don't believe they are silicone.
The cable diameter is ~2mm so I think these are suitable for high voltages or high currents !

Shrouded cables also available:
https://www.ebay.co.uk/itm/285695589133