1505 Cog

$17.24 ~~$57.59~~ In stock

Quality, commitment, and professionalism, have made JOBO one of the leading brands in the photographic industry since 1923. JOBO tanks and products have become legendary and JOBO's innovations set the standard for darkroom processing.

The 1505 JOBO Cog is used to upgrade standard inversion-style Jobo tanks for constant rotary agitation use with a JOBO Processor, such as the SilverBase Expert, CPE-3, or CPP-3. Note: Installation of the cog into the lid of the JOBO tank or drum is permanent and the cog cannot be removed.

Compatible with: JOBO 1510, 1520, 1540, 2520, 2540, and 2550 tanks

Customer Reviews (5.0 / 5 · 5 reviews)

Joshua ★★★★★ Aug 20, 2026

Built like the tanks it's meant to pair with, this cog fits snug and turns with zero wobble. The machining is precise enough that I trust it for years of darkroom work, and it feels solid in hand.

Joshua Z. ★★★★★ Aug 19, 2026

The machining on this cog is flawless, and it fits perfectly into my existing setup without any wobble. I’ve run three batches through it this week and everything stays rock-solid, which is exactly the precision I was hoping for.

Richard C. ★★★★★ Aug 18, 2026

Bought this mainly for the legendary build quality, and honestly, the machining alone makes it feel like a tool that'll outlive my darkroom habits. The threading on the tank lid engages so smoothly you can tell it's been refined over decades, not just stamped out. Exactly the kind of precision I was