To fit no.6/ no.8 screws. Simple to use- screw through the hole in the bottom half of the cover, then just clip the cap over the screw head and snap into place.
eBay
Bicycle Crank Wrench Installation Tool for Remove Fixing Bolt Bike Repair Tools Adjustment Cap for Shimano HollowTech
Aliexpress UK
M12 Nut Cap (19mm Spanner). M5 Nut Cap (8mm Spanner). M6 Nut Cap (10mm Spanner). M8 Nut Cap (13mm Spanner). M10 Nut Cap (17mm Spanner). This restriction also applies to a fault that has arisen as a result of improper repairs by a service partner authorized by us.
eBay
MUQZI Crank Arm Fixing Bolt MTB Bike M18 Crank Cover Screw Aluminum Alloy Crankset Cap
Aliexpress UK
M12 Nut Cap (19mm Spanner). M5 Nut Cap (8mm Spanner). M6 Nut Cap (10mm Spanner). M8 Nut Cap (13mm Spanner). M10 Nut Cap (17mm Spanner). This restriction also applies to a fault that has arisen as a result of improper repairs by a service partner authorized by us.
eBay
RISK 1PCS M6x30 M6x35 M6x40 M6x50mm Bicycle Headset Bolts Titanium Stem Cap Screws for Mountain MTB Road Bike M6*30/35/40/50mm
Aliexpress UK
Simple to use- screw through the hole in the bottom half of the cover, then just clip the cap over the screw head and snap into place.
eBay
Bike Crankset End Cap Bolt Extractor Tools For FSA Bicycle Crank Wrench Screw Removal Tool Cycling Parts
Aliexpress UK
To protect and cover bolt head or nut. grey colour finish. made from polyethylene plastic (LDPE). for a proffesional finished look.
eBay
MUQZI Crank Arm Bolt Cap And Crank Arm Extractor Bike Crank Arm Remover Installation Wrench For SRAM DUB Repair Tool
Aliexpress UK
KW1-KW17, PA20-PA38, PA41-PA49, PA60-PA78, PH4-PH44, PH49-PH50, PO (Isle Of Wight) TR (Isles Of Scilly) ZE (Channel Isles). Cap Height: 2mm. AB31-AB38, AB40-AB56, BT (Northern Ireland) GY, HS, IM (Isle Of Man) IV1-IV28, IV30-IV32, IV36-IV49, IV51-IV56, IV63, KA27-KA28.
eBay
MUQZI Crank Dust Cover MTB Right Hollow Crank Arm Protection Cap Bicycle Crankset Ultralight Alloy Plug BMX Road Bike Bolt
Aliexpress UK
Quantity: 160pcs. Type: Bolt Covers. Material: Plastic. Color: Black.
eBay
2Pcs Bicycle Inline Cable Adjuster Adapter Adjustment Screw Bolt Bike Derailleur Shift Brake Cable For 4/5mm Shifting Cable Cap
Aliexpress UK
Versatile: These hinged screw covercap are designed to provide protection to exposed M5 screw heads, making them versatile for both indoor and outdoor use. They effectively conceal screw heads, leaving a clean and aesthetically pleasing finish.
eBay
MTB Bike M 18/M19/M20 Cranks Screw CNC Crankset Cover Cycling Parts Bicycle Accessories Prowheel Crank Bolt Cap
Aliexpress UK