Metal tube (aluminum?) on a keyring, with some o-rings strung on

HILLMAN Metal Silver Screwdriver Set Key Ring

Nite Ize O-Series Gated Key Ring in Stainless OS-11-2R6 - The Home

Light, colored pattern cloth covered tube with a string connecting 2 odd metal parts on either end. : r/whatisthisthing

HEAT TREATED KEY CHAINS- We Only Source From the Best Hardware Manufacturers with The Most Stringent Compliance Standards SUPER HARD SUPER STRONG

25 Pack - Extra Large Key Rings - 1.25 Inch Heat Treated - Heavy Duty Sturdy Metal Split Ring Keychains by Specialist ID

O Ring ø 15 - 38 mm, Gray

HILLMAN Metal Red Multi-Tool High End Accessories Key Ring - Ace

Found near an old convent. Large, rusted, metal bar with two Pronged ends on both sides, with metal loop fixed in the centre. : r/whatisthisthing

18 Pieces Spring O Rings Alloy Trigger Round Snap

Steel Grip Aluminum Yellow Magnetic Mechanical Pick-Up Tool 5 lbs

3x9mm Foldover Jewelry Crimp - Gunmetal Plated (gross) - Rings

Locks in Smell, Easy to Clean | This tube is engineered to be completely airtight and locks in any air or smells. This metal holder has a friction fit

ONGROK Premium Storage Tube, Keychain, Pocket-Sized, Airtight, Aluminum Metal Holder and Case (Gun Metal)

41-210-12-9 Gunmetal Split Rings, 12mm - (Limited Availability

HILLMAN 2 in. D Tempered Steel Multicolored Split Rings/Cable