VOOPOO Maat Sub-ohm Tank 2ml/4ml https://www.heavengifts.com/product/VOOPOO-Maat-Tank.html Sale Price: USD 39.90 I won this tank from Heaven Gifts I put this tank to the test. I used the .2 coil for almost a week. It does what it’s designed to do. What is unique is that when the tank is empty there is still some juice on the little “shelf” beside the cotton so it allows it to not burn empty. It had good flavor and cloud production. After a week I put the .13 coil in and I think I prefer the flavor with this one. It does have the easy drop in coil replacement. It is a top fill with a cool spring loaded button release for easy filling. I had a few “air bubbles” that caused it to flow back out while filling. The hole needs to be bigger. That is the only leakage I had from either coils….. An awesome tank that works really well & is easy to use. Parameters Size: 56 x 28mm(Standard) & 56 x 24.5mm(TPD) Capacity: Standard 4ml & TPD 2ml Coil: MT-M1 0.13ohm Single Mesh Coil(60-85W); MT-M2 0.2ohm Dual Mesh Coil (50-80W) Material: Stainless Steel & Glass Way to Refill: Standard: Top fill with automatic gap; TPD: Top fill with child safety lock Thread: 510 Middle AF design with bottom airflow make-up PNP coil-installation system for easy replacement Anti-leakage design of filling port Coils burn-out prevention Triple air holes for smooth air intake All-new MT-M1/M2 Mesh coils 4ml Standard Edition 1x MAAT Tank(4ml) 1x MT-M2 0.2ohm Coil(Pre-installed) 1x MT-M1 0.13ohm Coil 1x Glass Tube 2ml 6x Sealing O-Ring 1x User Manual Cons: The way the base comes off. Even with it being screwed onto the mod it may accidently be turned and come off. The airflow adjuster is a little loose. Pros: No burning of the coils with the M-1 coil. Easy to use. Drop in coils. Spring loaded top for easy filling. I would recommend this for both new & experienced vapers.