These are red spade solderless terminal connectors.
| Order# | Stud Size d2 | 
| 12-930-100 | #10, 5.3mm | 
Thickness .032"(0.8mm).
Sold in package of 100 pieces.
Other wire size range is available.
| Order# | Stud Size d2 | 
| 12-910-100 | #6, 3.7mm | 
| 12-920-100 | #8, 4.3mm | 
| 12-930-100 | #10, 5.3mm | 
 
    
             
 
 
 
 
  
 