This product is suitable for Franke Olympus stainless grub retaining screw 133.0084.677 3527R 3257R ideal standard E91830267. Tap Magician are the UK experts in ceramic disc tap cartridges and leaky taps. We offer high quality fully compatible tap valve spares for most UK kitchen, basin, bath and shower mixers. Easily repair and doctor your leaking or dripping hot and cold taps. Traditional or ceramic valve type. We have experienced advisors available for any technical support you need help or advice with. We stock the spare parts for all of our valves for easy and cheap low cost future maintenance (ceramic disc internals and silicone seals and washers and o'rings). We offer a 12 month warranty on all of our products.