After months of testing, I am thrilled to be able to offer this traditional nitrocellulose indoor model cement. Higher bonding strength than the alternatives on the market with just the right amount of plasticizer to reduce the shrinkage on a delicate motor tube joint. This glue comes as a nice viscosity for scale an outdoor models, but can be easily thinned with simple acetone for the more delicate indoor models. As close to the original formula Ambroid as i have ever seen. Comes in a bottle with a flip up spout, but not intended to be used as an applicator.