Paper-Wrapped Mini-BlocksPaper wrapped mini blocks are specially built for cuttings and seedlings. Each paper wrapped strip comes with 15 mini blocks measuring 1. 5 * 1. 5 * 1. 5. Cutilene has plenty of years of experience in building Rockwool products in the Netherlands. The biggest propagators across the world mainly prefer them. Each Rockwool cube has a plant comfort fiber structure with the following features: Minimal resistance for roots to grow in A fiber structure that