OXVA Arbiter 2 RTA Tank
Building your own coils changes how a vape performs, and OXVA designed the Arbiter 2 RTA Tank around cutting out the fiddly parts of that process. The postless build deck is the first thing experienced coil builders notice — there's no center post to route legs around, no juggling screws in a tight gap, and no extra step that raises the odds of a short. Four deck-based terminals sit on the outside, secured with hex screws, giving enough room for a single coil or a dual coil RTA setup without cramming wire into a space that was never meant for it.
This 26mm RTA tank ships with two glass options rather than forcing a single capacity on every buyer. The bubble glass holds a full 5mL, useful for longer sessions or when refilling isn't convenient. The straight glass drops that down to 3.5mL but keeps the whole tank slimmer on the mod, which some builders prefer purely for how it sits in hand. Both glass sections fill through the same quarter-turn top cap with dual fill ports, so refills mean a twist, a pour, and a twist back — no unscrewing the entire top every time the tank runs dry.
Material choice matters on any rebuildable, and the Arbiter 2 leans on stainless steel for the main chassis, paired with glass and resin components at the mouthpiece. At 26mm across with a 24.5mm base, it sits comfortably on the box mods most Pakistani vapers already own, without the overhang that makes larger RTAs look mismatched on a smaller device. The finished unit weighs roughly 77 grams, light enough that it doesn't throw off the balance of the mod it's threaded onto.
T2B airflow tank
Where this tank earns its keep is airflow. OXVA calls it T2B, short for top-to-bottom, and the mechanics behind it are straightforward: air enters through the top, travels down two internal channels, and reaches the coil through cutouts positioned to hit the center rather than the outer wraps. Older side-airflow RTAs tend to cool the edges of a coil while leaving the middle under-fed, which shows up as flatter, thinner flavour. Feeding air into the middle of the coil produces a noticeably fuller draw, which is the whole reason a T2B airflow tank design gets requested by name rather than treated as a spec on a list.
A dual slotted control ring handles draw resistance, closing down for a tighter mouth-to-lung pull or opening for a looser direct lung hit. The included 810 wide-bore drip tip suits the latter, and a 510 drip tip adapter is in the box for anyone who prefers a narrower mouthpiece. Connection to the mod itself runs through a standard 510 thread, so it isn't locked to OXVA devices — plenty of builders in Pakistan run this tank on a completely different brand of mod without any compatibility issues.
Everything needed to get started ships in the box: the tank body, a spare straight glass, two 0.4ohm fused Clapton coils, shoelace cotton, the drip tip adapter, spare screws, a screwdriver, O-rings, and a manual. That's a full build session covered without sourcing coils separately on day one. New builders can run the included coils as-is while learning how the deck's airflow and wicking behave, then move to custom wire and wrap counts once the basics feel familiar. Wattage depends on the resistance built or installed, though the stock 0.4ohm coils generally sit comfortably in the 40 to 60 watt range on a dual coil configuration — always confirm actual resistance with an ohm reader before firing on an unregulated device.
Key Features:
● Bubble Glass Or Straight Glass Options
● Fast Twist Top Fill No Full Unscrew
● Fits Most Box Mods At 26mm
● Four Terminal Deck Beginner And Advanced Friendly
● Center Fed Airflow For Stronger Flavour
● Adjustable Draw Tight Or Loose
● Complete Kit Coils Cotton Tools Included
● Multiple Finish Colour Options
● Genuine OXVA Stock At Tranzax Vapors
● Same Day Karachi Delivery Available
Finish options include stainless steel, matte black, gunmetal, gold, and rainbow, giving some room to match the tank to a mod's colourway rather than settling for whatever's in stock. Tranzax Vapors carries the OXVA Arbiter 2 RTA Tank as authentic stock, not grey-market units missing parts, and ships it same day within Karachi with three-day delivery to the rest of Pakistan. For anyone who has spent months on prefilled pods and is ready to build their own coils for better flavour and lower running costs, this tank is a sensible, well-supported place to start — and for builders who already know their way around a coil jig, the postless deck and dual coil RTA layout leave plenty of room to experiment further.
Maintenance on this 26mm RTA tank stays simple once a build is in place. The O-rings around the glass and deck are the parts most likely to wear over time, and keeping spares on hand avoids downtime if one perishes after months of daily fills. Cleaning is a matter of pulling the tank apart, rinsing the deck and glass under warm water, and drying thoroughly before rebuilding, no special solutions needed. Because the postless build deck has fewer components than post-style decks, there's also less to disassemble during a routine clean, which matters for anyone rebuilding on a weekly schedule rather than treating it as an occasional job.
