WORKPRO 8PC Flex Head Ratcheting Wrench Set Metric 8-17mm Anti-slip Set 72-Teeth

The wrench hardness up to HRC 50 makes the wrench able to bear more force. Efficient Wrench - The 72-teeth ratchet wrench set is smooth and requires only a 5-degree working swing arc. capable of clamping round nuts within 85% of wear, anti-slip property increased by 30%.