1. In Single Ended Open Ended Spanners, one end is open which provides to hold the nuts or bolts heads or grip that to either tight or lose it.

2. Open-end spanner is also known as single-end spanners their known size is basically the

difference between their respective jaws.

3. These are drop forged to give strength and durability.

4. They are made of the best quality aluminum bronze.

5. It is used on round nuts having holes in the periphery to receive the spanner pin.