Heavy Tooth Bar - 2AW►MADE IN USA. 60-1/2" Wide - Good For Buckets With Inside Width 60-5/8" to 61-1/8" Applications: Tooth Bar can be easily installed inside of a bucket. It is used tremendously for all kinds of digging conditions.
Heavy Tooth Bar - 2AW – 61" Wide - Good For Buckets With Inside Width 61 to 61-5/8" Applications: Tooth Bar can be easily installed inside of a bucket. It is used tremendously for all kinds of digging conditions.
neatfarms.com
They do provide the range of bucket sizes they will fit.
I have no association with that business, but I have purchased 2 tooth bars from them and my neighbor bought one too. Fast shipping (got them within 5 days after ordering if in stock).
Most tooth bars go from inside edge to inside edge of the existing bucket. They either clamp or bolt to the lip of the bucket. Mine is made by Rankin and I bolted it to the lip of the bucket. This is not the best picture in the world BUT........
Look closely. The tooth bar is yellow. There are four bolts holding it to the bucket lip. There are eight teeth on this tooth bar.