Evoc - Bite Valves & Tube Stock Item:EVOC HYDRAFLEX TUBE WITH COMET BITE VALVE (FOR USE WITH EVOC BLADDERS) Easy to access the beam

Easy to access the beam setting you want via the switch on the top

After chain use and due to mud and rust

Efficiently holds the sprockets when removing the cassette lock-ring

The large Ontrack Touring bag is versatile for trips long or short

Comes with 2 keys

Evoc - Bite Valves & Tube Stock Item:EVOC HYDRAFLEX TUBE WITH COMET BITE VALVE (FOR USE WITH EVOC BLADDERS) Easy to access the beamEVOC BITE VALVES & TUBE Replacement mouthpiece and drinking tube for evoc hydration bladders. HIGHLIGHTS FEATURES Self closing silicone stream valve Leak tight seal Taste neutral material for pure flavour Weight: 10 grams Dimensions: 2 x 3. 5 x 6 cm