Ohuhu 147 PCS Watch Repair Tool Kit Case Opener Spring Bar Tool Set Bonus A Hammer MULTIFUNCTIONAL: Perfect for opening watch backs, watchband adjustment, changing watch batteries, gaskets, adjusting bands etc SELF RELIANCE: Small, clean and functional, this watch repair tool kit helps you get your watch problem done at home instead of going for watch repair shops STURDY and DURABLE: 147 pcs watch repair tool kits are all made of high quality material, more professional for watch repair requirements, suit for both professional and general use ALL ESSENTIAL IN: all essential watch repair tool in a black nylon carrying zipper case, convenient storage, easy to take care of them and get the job done by anywhere AFTER-SALES SERVICE: Providing 18-month warranty and friendly customer service, you may contact us if you have any question