Electric hammer drill is not loaded into (see detailed description, online etc.)
Whether it's 4mm or 24mm, they're just different sizes of front twist handles, and the back slots are the same... You go look at the eyes of the drill hammer inserted is not square, if it is a party, is the party that bit, supporting... There could be a bit not installed in place, should pay attention to is: before the first drill, electric hammer drill eyes below the plastic sleeve down in the end, the plastic sleeve and the drill bit eye separation (when necessary on the plastic sleeve and the drill bit piece to eye mention) and then the bit to the eyes plug in the end. Then release the plastic sleeve and let it return... After installed, the lift hammer bit hard top on the wall or ground test drilling, if a clear sense of the impact that the drill in place, you can use.
24mm's drill bit. His roots are small and of regular size. If you can't hold it, chances are you've bought the drill bit wrong.
2 slot 2 pits are normal round, 4 hole is square first determine your What's wrong with you?. There are two kinds of hammer head 1 is pressed into the drill hammer. The 2 is a rotating hammerhead inserted into the drill and then back to its original position.
