Choke pictured has different threads. Mobil chokes have thread at the top of the choke.

PRIMOS HUNTING CALLS TightWad Turkey Choke Tube - Hard on turkey heads, not your wallet. The Tight-Wad produces patterns that densely spread pellets into a 30" circle at 40 yards. No frills, just clean kills. This choke tube is CNC milled from chrome alloy steel. Shoots lead, copperplated lead, and HEVI-SHOT. Install and remove without any tools.

Tightwad Choke Tube - Ben/Ber Mobil 12Ga .655