Type 2 roller bearing clutch. Scratches on derailleur body and pulley wear shown in photos.
eBay
ZTTO MTB Bike Shifter Derailleur 7/8/9/10/11/12 Speed 3x7s 3x8s 3x9s 3x10s 11s 12s Shifter Lever Micronew For R50 R70 m4000 m370
Aliexpress UK
Shimano Altus RD-M370-SGS. Long Cage Version suitable for cassette up to 34T. 9 Speed Rear Derailleur. Top-Normal Swing Design: Provides intuitive and precise gear changes. 11-Tooth Pulleys: Reduce pulley wear and chain noise for a quieter, smoother ride.
eBay
1Set M4000 Bicycle Derailleurs Shift Lever 3 X 9 27 Speed MTB Mountain Bike Folding Bicycle Shifter SL-M4000 Cycling Accessories
Aliexpress UK
Full working order, no issues, comes with new extra long gear cable & ferrule end cap.
eBay
LTWOO A5 1X9 9 Speed 2:1 1:1 Shifter Lever 9s Rear Derailleurs Trigger Bike Groupset 2 Kits Switches Compatible For Shimano
Aliexpress UK
New, without the original box
eBay
Mountain Bike Derailleurs Front and Rear Shifters 8/9/10/11 Speed Shifters Finger Picks Bicycle Shifters Bicycle Accessories
Aliexpress UK
Check part no as ,may be long cage and may work with 10 speed also.
eBay
ZTTO MTB 9 Speed Set 1X9 Shifter Rear Derailleur 9V 50T Cassette K7 Sprocket Parts For m370 m430 m590 DEORE Single Crank System
Aliexpress UK
SHIMANO DEORE rear shadow derailleur.
eBay
Shimano Alivio M3100 9s Right Shifter Lever Rear Derailleur SGS 9 Speed Groupset For MTB Bicycle Mountain original parts
Aliexpress UK
Used, normal wear can be seen. Fully functional without any major issues or concerns.
eBay
SHIMANO ALIVIO M3100 9 SPEED Groupset SL-M3100-R Shifter RD-M3100-SGS REAR DERAILLEUR SGS SHADOW for MTB bike Original parts
Aliexpress UK
Top-normal swing design. This includes Republic Of Ireland. 11-tooth pulleys for reduced pulley wear and chain noise. Wide link design increases rigidity and service life.
eBay
MicroNEW Bike Front Derailleur 8/9/10/11 Speed - MTB Front Gear Shifter for Mountain Bicycle Drivetrain Parts
Aliexpress UK