Shimano XT RD-M786 GS 10 Rear Derailleur: Mid Cage 10 Speed (New)

Great 10-speed mountain bike derailleur. Condition New in box Details Shadow plus Dyna-sys GS Mid cage Top normal (not rapidrise)

Suntour GT RD-1200 Rear Derailleur: Long Cage - Touring (MINT+ Low Miles)

The Suntour GT from the 1970's was a super smooth shifting derailleur with capability to shift up to 34t cogs and 36t total capacity.  It wasn't sleek looking nor lightweight, but it sure did shift well.  Better than the mighty Cyclone GT...

SRAM X0 10 Speed Rear Derailleur: Short Cage - Black Stealth (EXC+)

Top level 10s rear derailleur from SRAM.  Condition Excellent used shape.  Some cosmetic wear, nothing too bad.  Pics show condition accurately. Details Short cage 28t max cog Black with stealth decals Exact Action MSRP: $260

SRAM X4 9 Speed Rear Derailleur: Black - Long Cage (NEW)

Affordable and reliable derailleur for SRAM 7/8/9/10 speed shifters with 1:1 ratio  Condition New in box Details Long cage

NIB/NOS Crud Claw Cassette Cleaner Gizmo Gadget: Retro 1990's Weirdness - Black Anodized

This little trinket from the wild and weird early 1990's attached to your dropout under your quick release, and weaved through your cassette cogs to clean the mud and gunk as you pedal.  Did they work? I don't know. Never used one myself.  But...