JINYU [Premium Quality Material] High Speed Steel drill bits with heat-resistant titanium plating for a longer life and durability[Quick Change Drill Bit Set] Fitted with hex shank and provides easy quick change outs. It fits cordless screwdrivers, drills etc or use in standard drill chuck[Smooth Drilling] Drill point tip increases cutting speed by self-centering to prevent walking. Threaded chip flutes remove chips and particles faster[Widely Used] Ideal for drilling wood, plastic, aluminium, etc. Using for DIY, general building/engineering, home repairs and light jobsDelivery Quantity: 1set (13pcs)Package Contents: Only the above package contents, excluding other products.Size: as shown(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Color: as pictured(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)