Flush choke tubes for 20b ATA SP Shotguns.
Choke constriction is denoted on the side or by notches at the muzzle
Notch number conversion
1 - Full
2 - 3/4
3 - 1/2
4 - 1/4
5 - Skeet
*Chokes are either be silver or black, this can vary depending on batch
