Fits gauges 14-23
Item # | Tube OD | Head Diameter | Head Height | Overall Length |
| C-16-U-21 | 1/2" | .500 inch | .250" | .750" |
| C-20-U-21 | 5/8" | .636 inch | .315" | .818" |
| C-24-U-21 | 3/4" | .750 inch | .312" | .833" |
| C-28-U-21 | 7/8" | .875 inch | .312" | .831" |
| C-31-U-21 | 31/32" | .968 inch | .480" | .980" |
| C-32-U-21 | 1" | 1.000 inch | .500" | 1.000" |
| C-36-U-21 | 1-1/8" | 1.125 inch | .375" | 1.040" |
| C-40-U-21 | 1-1/4" | 1.25 inch | .625" | 1.250" |
| C-48-U-21 | 1-1/2" | 1.500 inch | .750" | 1.375" |
| C-56-U-21 | 1-3/4" | 1.750 inch | .397" | 1.062" |
| C-64-U-21 | 2" | 2.000 inch | .400" | 1.050" |
