Riva Needle Cap is compatible with all current 5ml, 10ml 15ml 18ml 20ml 30ml liquid bottles
the diameter for the needle inner hole is 0.7mm which is bigger than other similar one, this make sure VG liquid goes smoothly to the tank system.
the needle is 24mm long -- 8mm longer than other similar products.
this needle cap makes it very easy for you to refill regular atomizer, tank atomizer , cartomizer and CE2 cartomizer
www.EastMall.net Eastmall International Co.,Ltd