Prepare rubber end covers with appropriate size; 2. Insert the end of screws, bolts, pipes, etc.
eBay
MUQZI Crank Arm Dust Cap Remover Wrench MTB Road Bike Hollow Crankset Bolt Screw Removing Installation Tool Bicycle Repair Tools
Aliexpress UK
【Specification】6mm Inner Dia, Rubber Material, Black【Widely Application】1. All kinds of pipe ends protection: plastic pipe, metal pipe, oil pipe, water pipe, vacuum pipe; 2 Thread protection: bolt, screw, nut thread protection【Widely Application】3. For shelf, fence, rail protection; 4. For furniture, chair, dining table, stool, hammock decoration protection; 5.For hole cover, protect, decorate, seal (drain hole)【Size Selection】Because rubber material is soft and elastic, we recommend choosing rubber end cap that is slightly smaller than the outer diameter of the product to be protected. For example: the outer diameter of your product is 9.8mm dia, choose the rubber cover of 9.5mm!【Rubber Material】Soft, Elastic, Accurate Size, Oil Resistance, Heat Resistance, Dust Resistance, Long Service Life.
eBay
TANKE Bike Stem Cover Aluminium Alloy Stem Top Cap Only 5.2g Ultra Light Headset Cover With Screw for 28.6mm Front Fork Head Tub
Aliexpress UK
Rubber End CapsProduct Details1.【Widely Application】3. For shelf, fence, rail protection; 4. For furniture, chair, dining table, stool, hammock decoration protection; 5.For hole cover, protect, decorate, seal (drain hole)2.【Widely Application】1. All kinds of pipe ends protection: plastic pipe, metal pipe, oil pipe, water pipe, vacuum pipe; 2 Thread protection: bolt, screw, nut thread protection3.【Specification】55mm Inner Dia, Rubber Material, Black4.【Size Selection】Because rubber material is soft and elastic, we recommend choosing rubber end cap that is slightly smaller than the outer diameter of the product to be protected. For example: the outer diameter of your product is 9.8mm dia, choose the rubber cover of 9.5mm!5.【Rubber Material】Soft, Elastic, Accurate Size, Oil Resistance, Heat Resistance, Dust Resistance, Long Service Life.
eBay
M15/M18/M20 Crank Cover Screw Cap M20 MTB Crankset Cover Aluminum Road Bike Crankset Arm Bolt Mountain Bike Parts Accessories
Aliexpress UK
1.Our flexible end caps work great for preventing scuffs on kitchen or wood floor, as pliable protective seals for metal chair tips, patio furniture, bench feet, table legs or tips, bar stools, screw or nail heads, or to cover any round pole or hole2.Thread protector cover is made of vinyl rubber material, flexible and insulated, can widely application to furniture, electricity and so on3.PVC plug cover tip caps are made of soft material, good quality and durable, have long service life4.Perfect for covering screws or other threaded parts Specification:Inner Dia :6.5mm( 0.256 inches)Color : BlackMaterial : PVClength:15mm Package Content:100pcs x Screw Thread Protectors.
eBay
RISK Bicycle Stem Top Cap Headset Cover Titanium Alloy Bolt Road MTB Bike 28.6mm 1 1/8" Front Fork Head Tube Superlight Ti Screw
Aliexpress UK
Soft PVC protective covers Sizes available: from 2mm to 12mm (select from variations) LOTs available from 2pcs to 100pcs (selects from variations) Additional discount when purchasing several lots. Length of 15mm +-2mm Thickness of 0.8mm +-0.25mm I have more sizes available in Black I have another 7 Colours Available in my EBay shop
eBay
RISK Bike Titanium Bolt Screw M6x30 M6x35 M6x40 M6x50 for Bicycle Headset Stem Cap Cover Disc Brake Caliper Flat Allen Head
Aliexpress UK
1.Our flexible end caps work great for preventing scuffs on kitchen or wood floor, as pliable protective seals for metal chair tips, patio furniture, bench feet, table legs or tips, bar stools, screw or nail heads, or to cover any round pole or hole2.Thread protector cover is made of vinyl rubber material, flexible and insulated, can widely application to furniture, electricity and so on3.Rubber plug cover tip caps are made of soft material, good quality and durable, have long service life4.Perfect for covering screws or other threaded parts.
eBay
MUQZI MTB Bike M15 M18 M19 M20 Cranks Screw CNC 7075 Aluminum Alloy Crankset Cover Cycling Parts For Crank Bolt Cap
Aliexpress UK
100pcs 12mm Grey Rubber End Caps Bolt Cap Covers Screw Thread Protectors
eBay
NEW Carbon Bicycle Stem Top Cap with Screw For F10 F12 F(F14) handlebar Carbon top cover stem cover
Aliexpress UK
This round rubber end cap is suitable for protecting and covering metal rods, rods, bolts, cylinders, oil cylinders, screw holes, round pipes, Vinyl Rubber pipes, steel pipes, stainless steel pipes, valves, flanges, machinery, triangular devices, electrical appliances, etc. object. Widely used in billiard games, homes, entertainment, offices, industries, and other places.Specification Color: BlueMaterial: Vinyl RubberHole Diameter: 2.80 mm / 0.11 inchLength: 15 mm / 0.59 inchPacking List: 100 Pcs x Rubber End CapsAdvantageDurable Vinyl Rubber Bolt Covers: Caps bolt cover is made of Vinyl Rubber material, which is corrosion-resistant, high-strength and lighter than metal. The inner wall is thickened, the surface is smooth, and the connection is tight, which can be good protective caps for objects.
eBay
10Pcs Bicycle Oil Disc Exhaust Screw Dustproof Cap Brake Caliper Dust Cover Oil Brake Bleeder Grease Nozzle Cover Cycling Parts
Aliexpress UK