Home Q20 Q20 Fasteners Q20 Fasteners Use fasteners such as casters, nuts, bolts, or other hardware to increase the value of your Q20 project. Products Caster – Low profile, no brake swivel, 1.625″ diameter wheel $5.37 View product Caster – Swivel no brake, 2″ diameter wheel $6.90 View product Caster – Swivel with brake, 2″ diameter wheel $10.57 View product