The item under consideration is called Osteoshell. You indicate that Osteoshell is a biocompatable adhesive that gives instant stabilization to the fractured shells and exoskeletons of reptiles and supports the injured animal throughout the long healing process. Osteoshell is a two-component system, which forms a low viscosity cement after mixing. One component is a powder which is said to consist of Hydroxyapatite coated methyl methacrylatehydroxyethyl methacrylate copolymer, Poly(methyl methacrylate), and Benzoyl peroxide. The other component is a liquid which is said to contain Methyl methacrylate stabilized with hydroquinone monomethyl ether, and N,N-Dimethyl-p-toluidine. It will be imported into the United States as a kit, ready for end use. The kit will contain an empty 10ml syringe with a corresponding needle, a 20ml syringe filled with the powder component, an ampoule filled with the liquid component, a two way connector for use with the two syringes, a 2.4mm, and 4mm injection pipe to be used with the 20ml syringe, a spatula, and a pair of gloves.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N319850