Top pick
$2.49 ≈ 0.00003261 BTC
Fittings & adapters
G1/4 compression fittings for soft tubing, hard tube fittings, angled and rotary adapters, extensions, quick disconnects and plugs from EK, Bitspower and Barrow. Filter by type, tube size and color, and pay in BTC, ETH or USDT.
8 products
Products
- −75%
PhanteksIn stock
Rotary Hard Tube Fitting 12mm 45 Degree G1/4 Black
- Type
- Plug-in
- For hard tubing
- Yes
- Color
- Black
$4.99
$19.99≈ 0.00006534 BTC KoolanceIn stock
Fitting Socket Plug Black G 1/4 BSPP 5-Pack
- Type
- Plug-in
- For hard tubing
- Yes
- Angled
- No
- Color
- Black
$4.19 ≈ 0.00005487 BTC
- −50%
BitsPowerIn stock
Multi-Link Adapter G1/4 inch to 16mm OD Hard Tube Shiny Silver
- Type
- Plug-in
- For hard tubing
- Yes
$1.99
$3.99≈ 0.00002606 BTC EK Water BlocksIn stock
EK-Quantum Torque Drain Valve Satin Titanium
- Type
- Drain valve
- Angled
- No
- Color
- Titanium
$20.99 ≈ 0.0002749 BTC
Thermal GrizzlyIn stock
DeltaMate Plug Matte Nickel
- Type
- Plug-in
- For hard tubing
- Yes
- Angled
- No
- Color
- Silver
$4.99 ≈ 0.00006534 BTC
- −33%
BitsPowerIn stock
Multi-Link Adapter Straight G1/4 Female to 12mm Hard Tube Mini Silver
- Type
- Plug-in
- For hard tubing
- Yes
$3.99
$5.99≈ 0.00005225 BTC $2.49 ≈ 0.00003261 BTC
Showing 1–8 of 8
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- Ships in 1–2 business daysFrom our warehouse in Germany
- New and sealedFull manufacturer warranty
- 30-day returnsSimple, tracked and refunded in crypto
Buying fittings & adapters at HodlChip
Fittings connect tubing to blocks, radiators and reservoirs. Almost every PC water cooling part uses G1/4" threads, so fittings work across brands. Match the tubing first:
- Soft tubing: compression fittings are sized by outer and inner diameter, for example 13/10 or 16/10 mm. The Tube size filter shows each fitting's size.
- Hard tubing: hard tube fittings are sized by outer diameter, usually 12, 14 or 16 mm, and seal with O-rings. Use the For hard tubing filter.
- Adapters and extensions: 90° and 45° rotary adapters, male-to-female extensions and multi-port blocks solve awkward angles and spacing.
- Quick disconnects and plugs: quick disconnects let you remove a radiator or graphics card without draining the loop; a drain fitting at the lowest point makes maintenance easier.
Keep to one tube size per loop, and buy a few spare fittings, as running short mid-build is common. Each angled fitting adds a little flow restriction, so use them where they save a bend, not everywhere. Tighten fittings by hand: too much force can crack acrylic block tops. Find tubing in tubing and tools in loop tools & accessories, and plan the loop with our custom water cooling guide.
Going deeper: Custom water cooling guide for beginners (2026)
Questions about fittings & adapters
What size fittings do I need?
Match the fitting to your tubing: compression fittings for soft tubing by outer and inner diameter, such as 13/10 or 16/10 mm, and hard tube fittings by outer diameter, such as 12, 14 or 16 mm. The thread on the other side is the standard G1/4".
Can I mix fittings from different brands?
Yes. G1/4" threads are standard, so fittings from one brand screw into blocks and radiators from another. Keep the tube size consistent across the loop, and check that each O-ring sits flat against the port.
Do angled fittings reduce flow?
Each angled or rotary fitting adds a small restriction. A few make no practical difference in a typical loop with a D5 or DDC pump, but a long chain of adapters adds up, so plan tube runs to keep them to a minimum.
