

Thexton THE485 Petcock Socket Set is a compact 1/4" drive kit with a steel universal socket and O-ring built to hold a 7/8" wrench for safely turning petcocks on radiators, engine blocks, and tanks.
Built for mechanics and DIYers who need a reliable, low-profile tool for draining and servicing cooling systems and storage tanks, this set delivers a durable universal socket on a 1/4" drive with an integrated O-ring to keep a 7/8" wrench secure. Thexton designed the THE485 to reach recessed petcocks and valves where conventional sockets or pliers struggle, making routine maintenance faster and cleaner.
The universal steel socket fits a range of valve shapes and sizes so you avoid stripping soft fittings or wrestling with awkward angles. Its 1/4" drive and low profile allow access into tight engine bays and behind radiator shrouds.
This socket set works with a wide array of automotive and small-engine petcocks — radiators, coolant drains, engine block valves, and storage tank fittings. It's intended for common 7/8" wrench engagement points and universal valve shapes found on many makes and models.
Thexton included an O-ring that holds a 7/8" wrench in place to reduce rounding and slipping during removal. The durable steel construction resists deformation and stands up to repeated use in workshop conditions.
The set ships in a compact package suitable for storing in a toolbox or parts drawer. Exact package dimensions are small enough for easy storage and transport.
Who is this for? Thexton THE485 is aimed at automotive technicians, motorcycle mechanics, fleet maintenance staff, and home mechanics who need a dependable, space-saving socket to access and operate petcocks and drain valves. If you regularly service cooling systems or small-engine equipment and want to reduce time, prevent tool slippage, and protect valve fittings, this compact universal socket set is a practical addition to your toolkit.
Q: Does the THE485 work with 7/8" wrenches?
A: Yes. The THE485 includes an O-ring that holds a 7/8" wrench in place for secure engagement and reduced slipping.
Q: Can I use this on recessed radiator petcocks?
A: Yes. Its 1/4" drive and low-profile universal socket are designed to reach recessed and tight-access petcocks.
Free shipping across Canada on every order, with no minimum. Orders are processed within 1 business day and standard delivery across Canada usually takes 2 to 5 business days after processing, with tracking by email. See the shipping policy.
Free 30-day returns. You have 30 days from delivery to start a return. Return shipping is free: email us your order number and we send a prepaid label. See the return & refund policy.
Not sure it fits? Email northtrailauto@gmail.com with your year, make, model and engine and we reply within 1 business day.