The Arctic Hayes Plumber's Essential Washer Kit contains an assortment of 9 of the most commonly used sizes. Handy pack to keep in a work van or in the home. Contains: 30 x 1/2in Fibre Washers Y.I.F 20 x 1/2in MT Ball-Cock Washers 20 x 1/2in Fibre Ball Valve Seat Washers 10 x Rubber Bottle Trap Washers: 1.1/4, 1.1/2in 50 x Cap amp; Lining Washers: 1/2, 3/4in 20 x 1/2in Rubber Shower Flex Washers 10 x 3/4in Washing Machine Hose Washers 35 x Fibre Flexi Tap Con Washers: 1/2, 3/4in 15 x Compression Olives: 15, 22mm