I just looked in Amazon and saw those car-unlock toolkits with air wedge- so cheap for $30 or so and they look similar to what the locksmith used. I'm buying one for emergencies although it wouldn't have helped me when out of town.

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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.