Schwaben has a solution to those hard to reach hose clamps with 8mm hex nuts. This 8mm driver features an overall length of 10-1/2" and a flex shaft length of 6". The ergonomic handle features a non-slip grip for when your hands are oily or wet.

8mm/ 5/16" are commonly found on aftermarket hose clamps.

California Proposition 65 Warning

Warning: This product can expose you to chemicals including [DINP], which is [are] known to the State of California to cause cancer or birth defects or other reproductive harm.
For more information visit https://www.p65warnings.ca.gov/