M42*0.75 Metal Focal Length Extension Tube
| Item: COKEN-TA18 | 5mm length extension tube | $2.00 |
| M42*0.75 Metal Focal Length Extension Tube | 10mm length extension tube | $4.00 |
| 15mm length extension tube | $6.00 | |
| 20mm length extension tube | $8.00 | |
| 30mm length extension tube | $10.00 |