ANDRO FREE SEAL BLADE VARNISH. If you plan to regularly change the rubbers around on your blade(s), we recommend that you varnish your blade to protect the surface from splintering and damage. This Andro blade varnish contains NO harmful volatile organic solvents, and complies with the latest ITTF regulations. This varnish comes is a handy size 25g bottle with small sponge applicator. We recommend that you wash out the sponge after use. This bottle will varnish around 5 – 6 blades.