Grade Pen (Penetrating) 50G Bottle

The Grade Pen in a 50 g bottle brings a penetrating thread locker into your toolkit with a distinctive yellow applicator tip for precise application. Its low viscosity is designed to wick into pre-assembled fasteners, press fits and knurls, helping parts stay put where it matters most.

Beyond locking threads, it also helps seal micro porosity in welds and castings, reducing leaks and rework. The lid colour coding signals strength level at a glance, so you can reach for the right grip when you need it quickly.

Specs

• Size: 50 g bottle
• Type: penetrating thread locker
• Applicator: yellow nozzle tip for targeted application
• Strength indication: colour coded lids
• Brand: Pratlok