Kit for Oval Hole 16" & 19.5" wheels - DL1F (Brass Option) Kit Includes 2 Outer Dually Valves, 2 Inner Dually Valves 7 1/8 Effective Length, 2 Oval Rubber Wheel Grommet Stablizers, & ThreadLock. $110.00 (+ $8.00 S/H) Kit for Oval Hole 16" & 19.5" wheels - DL1FC (Chrome Option) Kit Includes 2 Outer Dually Valves, 2 Inner Dually Valves 7 1/8 Effective Length, 2 Oval Rubber Wheel Grommet Stablizers, & ThreadLock. Chrome Stems. $120.00 (+ $8.00 S/H) SC1046 Double Seal Cap - Eliminates Need for valve caps on truck and motorhome valve stems, effectively reducing tire servicing time on fleet service operations. Rubber washer seals at valve mouth and an O'ring seals at extension mouth. Threads allow use of clip-on chucks. 3/4 effective length. $2.50 Each Note: 7 1/8 effective length for the inner valve may not be long enough for motorhomes. If you have a motorhome, we suggest the DL3F above.