Metal lathe Steady Rest Heavy duty Roller Jaw Kit 

I have measured the roller jaws. Customer can see the data and check if can fit your steady rest. 

Jaw diameter: 20 MM

Mounting stud diameter: 12 MM(We have even bigger model with 14, 16, 18MM,21MM, 25MM, etc stud diameter)

Surface: Black finish

Bearing width: about 8 MM

Bearing diameter:about 22 MM

Bearing type: Ball roller bearing

Jaw length: about 41MM

The jaw kit can fit many brands of lathes made in China. 

N.W. is 0.187 KG. Gross weight is 0.28KG.

Have sales of this model in China mainly. 

On the last photo you can see we have steady rest sliding jaws also. They can be made by copper, nylon and cast iron.