This Ambar School A4 refill, with 100 sheets of plain paper and 100gsm, is the ideal solution for replenishing binders and ring binders with unlined and grid-free paper, suitable for freehand drawing, diagrams, or creative notes. The high weight of 100gsm ensures comfortable writing and resistance to pen marks, without transparency. With 100 sheets and universal hole punching, this Ambar School refill is an economical and sustainable option for those who prefer to reuse the cover and only replace the paper insert.