![Spare Hardware Parts Old Billy Bookcase Pins (Compatible with IKEA Part #121762) (Pack of 12) : Amazon.co.uk: Home & Kitchen Spare Hardware Parts Old Billy Bookcase Pins (Compatible with IKEA Part #121762) (Pack of 12) : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/51mvWoe2d9L._AC_SL1500_.jpg)
Spare Hardware Parts Old Billy Bookcase Pins (Compatible with IKEA Part #121762) (Pack of 12) : Amazon.co.uk: Home & Kitchen
![Spare Hardware Parts Billy Shelf Pins (Compatible with IKEA Part #131372) (Pack of 12) : Amazon.co.uk: DIY & Tools Spare Hardware Parts Billy Shelf Pins (Compatible with IKEA Part #131372) (Pack of 12) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/71mIKqXCeYL._SL1500_.jpg)
Spare Hardware Parts Billy Shelf Pins (Compatible with IKEA Part #131372) (Pack of 12) : Amazon.co.uk: DIY & Tools
![Why would there be an extension option for the tall BILLY but not the short one? I bought the extension in the clearance section, already assembled, so no hardware came with it. Why would there be an extension option for the tall BILLY but not the short one? I bought the extension in the clearance section, already assembled, so no hardware came with it.](https://preview.redd.it/a8cz4plo0wz51.jpg?width=640&crop=smart&auto=webp&s=38a566309755f56fb47a3d5bbc32f97b156849f7)
Why would there be an extension option for the tall BILLY but not the short one? I bought the extension in the clearance section, already assembled, so no hardware came with it.
![Spare Hardware Parts Billy Shelf Pins (Compatible with IKEA Part #131372) (Pack of 12) : Amazon.co.uk: DIY & Tools Spare Hardware Parts Billy Shelf Pins (Compatible with IKEA Part #131372) (Pack of 12) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/318+Rvc4OxL.jpg)