AccuTrans is a highly-sensitive, DNA-friendly casting material for toolmarks, firearms and lifting latent prints from difficult surfaces. Casting material comes in dual-stage tubes, which include casting material and catalyst. When utilized, casting material and catalyst are mixed on demand through a unique mixing tip. No hand mixing is required and casting material is only used as needed. The AccutTrans® Mixing Tips are a component of the AccuTrans® Kit and is also sold separately in a pack of 40.