They're pretty strong. And it's handy to have two separate holes on the bottom to choose from for a screw or nail so you can adjust the fit. These 1" clamps will not fit 10 gauge extension cord (the thickest) snugly despite using a narrow screw hole. That was fine with me as I needed a bit of line play, but not too much because I was cornering every few yards. Those curves in the corners kept the cable fairly taut across the line, but I still had that minimal slack to make small adjustments and give the cable a little forbearance where it kinked.
Improve your iMac Security with the Kensington SafeDome Secure Lock (K64962US)
11 Review
🔐 Secure Your Desktop Computer and Peripherals with the Kensington K64615US Locking Kit
9 Review
Secure Your Laptop with the 🔒 Kensington K64638WW ClickSafe Keyed Twin Laptop Lock
12 Review
Kensington Microsaver Universal Computer Key Lock and Cable Security System 64162a for Desktops
9 Review