SCHWALBE SV7A Inner Tube 20 x 1 3/8 Tweet SCHWALBE Pricing RRP Our Price £8.59 **Ordered Upon Request In Stock (with supplier) 0 1 2 3 4 5 Description 28/37-438/451 EK 40mm As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.