The non-porous material protects the interior of alloy and carbon rims, in addition to their spokes and nipples, and a synthetic adhesive leaves zero residue behind once removed.As a general rule of thumb, Stan's recommends selecting a tape 1-2mm wider than the interior width of your rim.Gender must be filled in for Original Rim TapeSpecifications:One 50-metre roll will tape 20 x 29” rims or 25 x 27.5” rimsCreates durable, airtight seal over spoke holesCompletely non-porous vapor barrier seals rim interior from moistureAdhesive leaves no residue on rim, once removedLow friction surface helps tyre beads slip into place