There are five standard types of colour coded box for easy identification, which are highly regarded as a necessity by plumbers
Each box contains a varied size range of the following Flat Tap Rubber Washer, Tantofex Tap Rubber Washers, Flat Tap & Jumper, Delta Tap Washer, Dome Tap & Jumpers, Pegler Tap Washer, Barking Grohe Tap Washer and Supatap Type Washer