We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black metal rigid-tube fitting with knurled collar for 12mm OD tubing

Bykski

Bykski B-HTJV2-L12 12mm OD Rigid Fitting V2 diy cooling

SKU CH-G3VT-1SMGG MPN B-HTJV2-L12

Connects 12 mm rigid tubing to G 1/4 ports for non-aluminium custom loops

  • TypeCPU Block
  • ColorBlack
  • Secure G 1/4 thread connection for leak-free loops
  • Fits 12mm OD rigid tubing in PETG, acrylic or metal
  • Designed for non-aluminium custom cooling loops
  • V2 revision improves rigid tube sealing reliability
  • Single fitting included for flexible loop configuration

12 mm Rigid-Tube Fitting V2

The Bykski B-HTJV2-L12 is a compression fitting designed for custom water-cooling loops. It accepts rigid tubing with a 12 mm outside diameter made from PETG, acrylic or metal. A standard G 1/4 thread connects the fitting to blocks, radiators or reservoirs. The black finish suits monochrome builds.

Builders using 12 mm hard tube in non-aluminium

This fitting suits builders assembling a custom loop with 12 mm OD rigid tubing and standard G 1/4 ports. It is not for systems that use aluminium radiators or components, because the loop must be non-aluminium. It also does not fit soft tubing or tubing with a different outside diameter.

Single-fitting capacity for one tube connection

Each unit provides one secure connection point for a single length of 12 mm rigid tube. A typical loop requires multiple fittings — two per component — so one fitting alone cannot complete a circuit. Plan the total quantity around the number of components and routing bends in your build.

Highlights

  • Secure G 1/4 thread connection for leak-free loops
  • Fits 12mm OD rigid tubing in PETG, acrylic or metal
  • Designed for non-aluminium custom cooling loops
  • V2 revision improves rigid tube sealing reliability
  • Single fitting included for flexible loop configuration

Specifications

TypeCPU Block
ColorBlack

Questions about this item

Do I need 12mm OD rigid tubing and G 1/4in threaded ports on my blocks and radiators for this fitting to work?

Yes, the fitting is designed for 12mm outside diameter rigid tubing such as PETG, acrylic or metal and connects to standard G 1/4in thread ports on water blocks, radiators or reservoirs.

Can I keep my existing aluminium radiator or block in the same loop as this fitting?

The product specifies a non-aluminium loop, so it should not be used in a system that contains aluminium components; all parts in the loop must be compatible with non-aluminium coolant paths.

How can I confirm the fitting is sealed correctly after installation?

After assembling the loop, run a leak test with the pump powered independently for several hours while watching every joint; no drips or moisture at the fitting threads or tube seat means the seal is sound.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.