INFUN Telescoping 3 Ring Binder 4PCS 8.5"x11" Red Pink Blue Green

Telescoping 3-Ring Binder Set

The INFUN Telescoping 3 Ring Binder comes as a four-piece set in red, pink, blue, and green. Each unit holds 8.5"x11" paper and features a metal three-ring mechanism for secure document retention. The adjustable spine allows capacity to match the current paper load. These binders suit students and office workers who need flexible, colour-coded organisation.

Sustained Load Behaviour

The 0.9mm thick plastic construction resists wear during daily handling and repeated opening cycles. The telescoping spine compresses or expands without forcing the rings out of alignment, keeping pages flat even when the binder is carried in a backpack. The foldable front cover lies flat to create a stable writing surface that does not warp under hand pressure. Metal rings maintain consistent closure tension over long-term use.

Practical Capacity Limits

Spine adjustment ranges from 0.75 inch to 1 inch, defining the maximum paper volume each binder can hold. The fixed 8.5"x11" format prevents use with larger sheets or non-standard sizes. Rings accept only punched pages; loose sheets or unpunched documents cannot be secured directly. The four-colour pack provides exactly four independent binders, no more and no fewer.