View cart “Mechanical Grease Pencil” has been added to your cart. Previous Product Next Product Hinged Metal Rings $0.45 Hinged Metal Rings quantity Add to cart SKU: C31-045 Categories: Bag, Kneeboard, Strap Description Description 1″ hinged metal rings for holding checklist pages. Related products Quick View Quick View KneeboardMini iPad (4) Kneeboard $85.95 Add to cart Quick View Quick View Kneeboard, Misc.9G+ Info Card Set (3) $3.00 Add to cart Quick View Quick View Bag, Kneeboard, Misc., StrapChecklist Replacement Pages Only $0.75 Add to cart