A19 Style 1 Cell Extender

- 18xxx Batteries Compatible (Internal Diameter 19mm)
- Double O-Ring Seal
- Precision Machined with Aerospace Grade 7075 Aluminum
- Perfect Semi-Gloss Black Anodization that matches the "6P black"
- High Quality Knurling

Compatible with:

Lumens Factory
SP-6, SP-9 Seraph

Surefire
3P, 6P, 9P
6Z, 7Z, 9Z, 12ZM
G2, G3
G2Z
C2, C3
D2, D3
Z2, Z3
M2, M3, M3T, M4
6PX
P2X, P2ZX, P3X Fury (Not compatible with Fury Dual Fuel)
G2X, G2ZX

And all other lights that is compatible with the Surefire Z14, Z31, Z41, Z58, Z59, SW01, SW02 tailcap.