You are looking at 4 x 18mm Crutch Ferrules.
4 of 18mm Black Ferrules Crutch tip Stick Frame Ends 11/16"
Cord End Caps 80pcs/Set Of 4.5 * 18mm Seamless Metal Shoelaces Tips Head Replacement(Gold)
NiuLumea Billiard Table Cushion Facings Trapezoidal Pool Corner Bumpers 3mm/3.5mm/4.5mm Thickness Grey Set of 12 (8 for Large 96x46mm, 4 Small 67x46mm)
Comfysole 2 Left 3/4 Inch(18mm) Leg Length Discrepancy Lifts
Yardenfun Test Tube Rack for Storage and Organisation Orange Plastic 50-hole with Silicone Pad Prevents Collisions, Science Holder of 18mm Centrifuge Tubes for Laboratory Use
