China: A kung fu practitioner in China showed off his skills with an unusual stunt—using strikes from his bare hand to straighten a bent wrench.

The video filmed August 13 in Lianyungang, Jiangsu Province, shows Cao Yanyou using the back of his hand to strike a bent wrench.

Cao shows physical pain after the first strike, which does not appear to make much progress, but subsequent hits eventually straighten out the bent piece of iron.

Cao said he has been practicing kung fu for 30 years, reports UPI.