What's the name of this plastic piece that holds the tightening

Southwire 1/2-in Plastic Screw-in Connector Conduit Fittings in the Conduit Fittings department at

Tamper Evident Plastic Security Seals - Heavy Duty Pull Tight Seal - from TamperEvidentLabels.com, SKU: TS-0007

Stop the wiggle of loose seats. Easy to use. Includes 3 sets of washers that work with most seats. Includes tool that fits all size seats. One year

Toilet Seat Tightening Kit - Toilet Seat Bolts

6 Piece Unbreakable Jar Kitchen Storage 150ML Each Food Grade Plastic Container BPA-Free Stackable Air Tight - Kotak Sales

First Aid Only 3100 First Responder Kit, Small 98 Piece Plastic Case

Stop the wiggle of loose seats. Easy to use. Includes 3 sets of washers that work with most seats. Includes tool that fits all size seats. One year

Toilet Seat Tightening Kit - Toilet Seat Bolts

Lee Stafford Hold Tight Hairspray – Lee Stafford UK

Joint Holder Cone Holder Air Tight Plastic Rolling Tube Pack of 5 Choose Your Colour

CONFAST® #6-8 Plastic Conical Blue Bantam Drywall Wall Anchor Kit PAK810, Includes (100) Anchors, (100) Screws and (1) Drill bit (201 Pieces)