DSPIAE BP-SP Joint Strengthening Pen

Restore loose model-kit joints with the DSPIAE BP-SP Joint Strengthening Pen, a convenient tool designed to increase friction and improve the stability of plastic ball joints.
The pen applies a transparent, water-based coating to the joint surface. Once dry, the coating increases damping and resistance, helping loose arms, waists, and other movable joints hold poses more securely while maintaining smooth movement.
Its pen-style applicator makes it easy to apply a controlled layer directly to the area that needs strengthening, without requiring separate brushes or tools. The coating dries clear and can be reapplied if additional tightness is needed.
Suitable for Gunpla, plastic model kits, mecha kits, figures, and other models using compatible plastic ball joints, the BP-SP is a practical maintenance tool for fixing joints that have become loose through assembly, posing, or repeated movement.
Recommended for:
Gunpla builders, plastic modelers, action figure collectors, and hobbyists looking to tighten loose ball joints, improve posing stability, or restore resistance to joints that have loosened over time.