Abus Granit Super Extreme 2500/165 D-LockAbus Granit Super Extreme 2500 165 D Lock If you love your e bike, cargo bike or your bike in general, you want to protect it in the best possible way also against attempts to steal it with cordless angle grinders. Great attention was paid in the development of the GRANIT Super Extreme 2500 to ensuring the best possible resistance to attacks with cordless angle grinders as this method of overcoming bike locks is increasingly observed in large cities.