Hiplok A1000 Wall & Ground AnchorHiplok: The world's first anti angle grinder anchor Resist angle grinder attacks at home with an A1000, the world's first anti angle grinder anchor. With the 360 degree rotating base, it's easier to lock your bike in place using a D lock. To free up floor space, you can fit your bicycle incredible close to a wall using the A1000 as a wall anchor. However, it's also suitable as a bike ground anchor. Fix the A1000 to a solid brick or concrete substrate.