LOOP PENCIL is a brand-new combined pencil. Through the thread design and the use method of "one turn, one change", different forms are freely combined, thus achieving the effect of Min.pencil Min.pencil> MAX.pencil, that is, a small pencil exerts great energy and one more rotation, which means one less waste. Wood is the main raw material of traditional pencils. Pencils are too short and discarded without causing waste of resources. In addition, traditional pencils have various inconveniences, so we have carried out a systematic transformation and upgrade of traditional pencils for this series of problems.