Bought two of these on because my last magsafe wire was broken. Figured this would prevent it breaking since i carry it around in mu backpack all the time. So bought a brand new magsafe 1 adapter and put this 'cable saver and fixer' on it. well the top end immediately snapped, and the bottom part of the wire simply wouldn't fit in. When i tried to push it in as described on the pictures the hard plastic actually teared my cable. So i had to get some tools and make the 'cable saver and fixer' bigger by flexing it with some pliers and scrap the bottom opening so the wire would actually fit (only nearly, and it is stressed in this way). Very unsatisfied with this product as it left me with a damaged magsafe adapter and had to modify the product myself to make it work..