Original Entex™ Specification:
 
      | Material | Carbon Steel - Bright Zinc Plated (BZP/GALV) - Bright Zinc Plated (BZP/GALV) | 
|---|---|
| Outside Diameter (mm) | 19 | 
| Inside Diameter (mm) | 14.28 | 
| Wire Diameter (mm) | 2.36 | 
| Rate N/mm | 32.16 | 
| Coils / CM | 2 | 
| Spring Length (mm) | 610 | 
| Weight | 0.21310 kg | 
| Minimum Qty | Price Each | 
|---|---|
| 1 | £5.26 | 
| 25 | £4.61 | 
| 50 | £4.17 | 
| 100 | £3.75 | 
| 200 | £3.70 | 
| 500 | £3.33 |