Normally the allowable differences in the size are approximately 0.5-1cm in measurement. Please check the specifications before you place an order. 115 in 1 Precision Screwdriver Set: Our Screwdriver set with magnetic bits has the most complete 98 interchangeable magnetic bit and 17 utility tools, including magnetic handle, extension shaft,short post,aluminum alloy extension shaft, toolbox, tweezers, Phone pin, suction cup, bracts, crowbar, screw bits etc. Magnetizer/Demagnetizer: This screwdriver set prepared a good magnetizer/demagnetizer for you, which integrates magnetization and demagnetization functions.When you want to give demagnetization to the bit,just make it contact with the end which is marked "-".When you want to give magnetization to your bit,make it contact with the end which is maked "+". Premium Quality Material And Multi Scenario Applications: Mini screwdriver set are made of premium chrome vanadium steel material, durable. Suitable for dismantling and maintaining various items such as laptops, tablets, digital cameras, smartphones, Watches, electronics, phone, glasses, laptop, Jewelers and home appliances such as televisions, air conditioners. Flexible Shaft and Non-Slip Handle: The screwdriver handle has a non-slip silicone to help you grab it easily, not slipping. Magnetic screwdriver kit is equipped with a hard extension shaft and a flexible extension shaft, which is for narrow corners. The magnetic screwdriver kit helps you finish repair work flexibly and accurately. Easy to carry: Screw driver sets is packed in a plastic storage case, the location of the accessories is clear, which is very convenient to use, very convenient to carry around. Each screw or tool has its own fixed position to avoid loss. It is very convenient for you to bring it anywhere. It is an ideal gift for your father, family, friend, coworker and more.