SAVE YOUR LAPTOP : 1.2mm pentalobal screwdriver can be used to replace/open the bottom/back star screws of MacBook Pro with Retina Display (which are made after 2012) & MacBook Air MORE PRACTICAL: It has a flexible swivel top for one hand operation and is made of CR-V steel with non-skid plastic handle. Magnetic tip make it easier to twist the screws STURDY AND DURABLE: Portable and precise design, easy to grip and use, more in line with ergonomic design. Durable and sturdy construction ensures long life