A Dreamfarm Flisk in black (DFFK5714). Official specs are 12" long x 2.8" wide, 0.22 lb. Stainless steel and polypropylene. Ten wires in an ergonomic handle; a half turn twists them into a balloon whisk, a sauce whisk, or a flat whisk, and the wires flatten for storage and washing. Official page lists the wires as high-vibration spring steel, sealed in the handle. Dishwasher-safe. BPA-free; FDA and LFGB-approved materials. Specs from Dreamfarm's Flisk page (black).

The twisting whisk. Balloon, sauce, or flat, then flatten it to wash.