Welcome to the "ZTTO Official Store"! Item Name: Tubeless Rim Tape Material: NOPP Special Rubber Specification: 16/18/21/23/25/27/29/31/33/35MM Size Details: 15cm x 15cm/5.91" x 5.91" (Approx.) Description: It doesn't increase the load, leaves no glue, and is easy to clean. It is used to seal the inner hole of the rim and maintain the airtightness of the tire under high pressure. Made of high-quality material, the tape is durable. The length of the product is 15cm, the width is 15cm. Mountain bike inner width of the rim is + (2~4) mm, or about -2mm outer width of the rim, mostly using 23/25mm tire pads. The narrow ring (23mm outer width of the rim) of road bike generally uses 18mm tire pads, and the fat ring (25mm outer width of the rim) generally uses 21mm tire pads. BMX road bike uses 16mm tire pad. Notes: We are specialized in selling bicycle accessories, if you have a need, remember to pay attention to us! It is recommended to wrap around two turns per wheel. Due to the light and screen setting difference, the product's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Tubeless Rim Tape