Set of 2 insert replacement sticks for Sustee Aquameter (3 sizes available). The refill is made from biodegradable non-woven fabric. Does not included the main body of Sustee Stick. Choose the right size for your Sustee. S (0.4″ x 0.3 x 4.7″) M (0.4″ x 0.3 x 7.1″) L (0.4″ x 0.3 x 10″) Product Details: ・Set of 2 insert replacement sticks for Sustee Aquameter. ・Replace stick every 6 to 9 months ・Easy to replace - twist off the cap, remove used core, insert the new core, then put the cap on. ・Core displays blue color when plant has enough water and fades to white when it is time to water. ・Award-winning product design - English language packaging ・Made in Japan, ship from USA.