VEVOR Bucket Tooth Bar, 53'', Heavy Duty Tractor Bucket Teeth Bar for Sub-Compact Tractor Loader, 4560 lbs Load-Bearing Capacity, Fits Bucket Cutting Edges Sized 1/2" or Less with No Drilling Required

It is 8mm.

About 10 inches give or take

There’s no difference except it has Allen bolts to clamp it on. And holes to bolt it also. No need to buy the clamp on because it won’t stay on And you end up drilling and bolting it anyway

Hello, we are very sorry for the inconvenience, due to the lack of prototype for the time being, our technicians can not verify your question in time to give an accurate answer,you can refer to the product detail page/manual for more information, thank you for your understanding.