Just used this: Wera 05030102001 0.3 x 1.8 x 60... https://www.amazon.co.uk/dp/B00154YD...p_mob_ap_share to adjust my seamaster bracelet. Easiest Omega bracelet adjustment. Watch is brand new but the length of the screwdriver meant the loctite broke with little effort; not a single slip on the screws. VERY easy 👍