Regular Stock Item - a regular stock item which is usually available for immediate despatch although supplies can sometimes be irregular.

Occasional Stock Item - an occasional stock item - supply can be irregular or occasional, or the item is a special purchase, or NOS (New Old Stock) is occasionally available. Please enquire for current situation.

To Order - Made or obtained to order, usually due to the low demand or specialised nature of the item, or because a customer's own part is required for reconditioning (e.g. brake servo or caliper).