T-Blade/ Cut Out Tip Screwdriver Set For Rolex Watch Movement Caliber - Best For Watchmaker. Screwdriver Set of 6 Non-Sliding, Precise Fitting Blades ( T Blade - Cut Out Tip ) Watchmaker's Non-Sliding Screwdriver Set of 6 Screwdrivers. Made in Korea by Timelab. 0.80mm to 2.00mm precise fitting replaceable blades. Includes 2 spare blades per size. Comes in a hard plastic case. Specifications Box Dimensions5.5" x 5.5" Weight6.5 oz with box Material Blades : Stainless steel Handles: Stainless steel (Iron plated ) Blade Thickness 0.8mm 1.0mm 1.2mm 1.4mm 1.6mm 2.0mm Finish PVD (Physical Vapor Deposition) coating Items Included 6 PCS. of TimeLab Watch Screwdriver Set (Flat-head blades) 12 spare blades ; 2 per each size Plastic storage box