Backhoe Kubota L3240 w BH 92 backhoe where can I get a mechanical thumb online

[lockman4288]

So I finally purchased my l3240 with HST cab 724 loader and BH 92 backhoe it came Friday
Have used it all weekend clearing brush I realized I need a mechanical thumb that will
Fit my backhoe the mounts are already installed on the BH 92
Where can I find a thumb online I have looked everywhere