15 ml What are the different sizes of powder and how do I know what I've got? On the jar you'll see letters next to the product code, either an R, SF or UH, please see below for their meanings. It's really worth noting that our regular grade powder is very much like a detail powder you might get from another brand and works well on sentiments and fine lines, but the Super Fine powders allow you to emboss the absolute finest lines & details. Please note: the exception is if they have glitter in them or other sizes mixed in. Regular ( R ) - All our powders are available in this grade. The particles are made the correct size to suit most applications Superfine ( SF ) - When the Regular grade powder overflows the edge of a line or a character a Superfine powder is required to give a perfectly crisp image. It will not give the highest raise but on a thin line it will feel just as high as the regular product. Ultra High ( UH ) - This grade is a very chunky product. It is used for the Triple Embossing Technique and when a large area is to be embossed. It will give a high raise but will not give a crisp result with regular or detailed stamps. Translucent ( T ) – Beautiful powders that allow light through them and so the colour underneath will affect the finished result. Opaque ( O ) – Powders that will not let light through and so when embossing they will not be affected by the colour under them. Marbling ( M ) – These powders have some opaque based components and so when moulding the white will appear producing some fantastic marble effects. Speckled Opaque (SO) – These will have random large size opaque particles in their make up which will not mix and flow when molten giving fabulous speckles unaffected by the base or substrate colour. WOW is a UK-based company. *PRE-ORDER ITEMS* Pre-order items must be paid for at the time of checkout. We do NOT guarantee arrival dates for any Pre-order items - order fulfillment from craft manufacturers is subject to delays. If your Pre-order items are expected to take an extended period of time, you will be contacted and asked if you would like to wait or cancel. Picking up Pre-order Items: Your orders get priority and you will be contacted as soon as your order is ready for pick up. If you order In-stock items and Pre-order items, you will be notified when each item is ready for pick-up. Shipping Pre-order Items: If you order both In-stock and Pre-order items in the same order, then the entire order will be held and shipped once the Pre-ordered items arrive. If you do not want to wait, please do 2 separate orders: one that contains ONLY in-stock items and one that contains ONLY Pre-order items.