Seems strong enough. The only reason I gave it 4 stars instead of 5 is that it hasn't been used long enough to determine its durability. I expect it will last a long time as the material it is made of seems to be of good quality and the way it is assembled is good too.
High-Quality White Plastic Flush Type Plugs for Industrial Hardware Applications
9 Review
π Marinco 6365CRN Locking Plug 250V: Secure and Reliable Power Connection Solution
9 Review
π 50 Pack of P MAP Maple Pocket Plugs
7 Review
π Enhance your Woodworking Projects with KREG P PIN Solid Wood Pocket Hole Plugs
8 Review