10, 20, 30, 40, 50 pack 10 pack ORIGINAL Neoperl strainer DeLuxe 24*1 complete with test mark on the case Suitable for all M24*1 internal thread fittings Flow class A (13.50 - 15.00 L/minute at 3 bar flow pressure) noise class I EU standard EN 246 including seals Not suitable for pressureless water heaters! Order at the same time and change aerators without any problems and without damage: For multiple orders, please use the shopping cart (combined shipping) universal key Neoperl metal Universal key 20 - 28MM Reinforced plastic nylon