Set of Ergonomic Watchmakers' Screwdrivers. Stainless Steel with Elastomer Membrane. Rotating Stand. Bergeon 6899-S10 Set of 10 Ergonomic Screwdrivers on Base, Sizes 0.50 to 3.00mm. Set of 10 ergonomic watchmakers' screwdrivers on a Ø90mm rotating base.