re-useable stiff nylon bristles on metal handle
good for cleaning with grain alcohol for a deep clean
mortise and chamber brushes come in packs of 2
airway brush come in packs of 5

chamber brush;
Overall length: 3.07″/78mm
Diameter (at bristles): 0.79″/20mm

mortise brush;
Overall length: 2.90″/74mm
Diameter (at bristles): 0.40″/10mm

airway brush;
Overall length: 6.75″/171mm
Length, brush – 2.30″/58mm
Diameter, brush – 0.20″/5mm