![IKEA Billy bookcase tip: if you have an OLD Billy bookcase (pre-2014) you can still add extra shelves even though the new extra shelves from IKEA use a new, disc-shaped shelf pin. IKEA Billy bookcase tip: if you have an OLD Billy bookcase (pre-2014) you can still add extra shelves even though the new extra shelves from IKEA use a new, disc-shaped shelf pin.](https://i.redd.it/tp19ukx1oll61.jpg)
IKEA Billy bookcase tip: if you have an OLD Billy bookcase (pre-2014) you can still add extra shelves even though the new extra shelves from IKEA use a new, disc-shaped shelf pin.
![Amazon.com: Spare Hardware Parts Billy Bookshelf Pins (Replacement for IKEA Part #131372) (Pack of 8) : Home & Kitchen Amazon.com: Spare Hardware Parts Billy Bookshelf Pins (Replacement for IKEA Part #131372) (Pack of 8) : Home & Kitchen](https://m.media-amazon.com/images/I/61HRljSMNRL.jpg)
Amazon.com: Spare Hardware Parts Billy Bookshelf Pins (Replacement for IKEA Part #131372) (Pack of 8) : Home & Kitchen
![8 IKEA COMPLEMENT PAX SHELF SUPPORTS 115344 101558 139199 139200 WITHE | eBay | Ikea pax, Shelf supports, Pax 8 IKEA COMPLEMENT PAX SHELF SUPPORTS 115344 101558 139199 139200 WITHE | eBay | Ikea pax, Shelf supports, Pax](https://i.pinimg.com/736x/86/4c/9b/864c9bca47234ecaaa97fb9cbeff3596.jpg)