Feet Adapters for indoor bike trainer cycling 4 Pack Adapters and 8 Pack Tennis Balls, Thick plastic Accessory for bicycle trainers to makes your riding more comfortable, rocker plates ๐๐ผ๐บ๐ฝ๐ฎ๐๐ถ๐ฏ๐ถ๐น๐ถ๐๐: Only works with Wahoo Kickr Core 1 (not for Core 2 or 3-legged). Inner diameter: 2.18"โmeasure your trainerโs legs before ordering to ensure fit for other brands ๐๐ป๐ฑ๐๐๐๐ฟ๐ถ๐ฎ๐น-๐๐ฟ๐ฎ๐ฑ๐ฒ ๐๐๐ฟ๐ฎ๐ฏ๐ถ๐น๐ถ๐๐: Crafted from dense injection-molded material (not flimsy 3D prints), these adapters stand up to daily sprints, heavy resistance without cracking or warping ๐ฅ๐ฒ๐ฎ๐น๐ถ๐๐๐ถ๐ฐ ๐๐ผ๐บ๐ณ๐ผ๐ฟ๐ ๐๐ถ๐๐ต ๐ง๐ถ๐ฟ๐ฒ-๐๐ถ๐ธ๐ฒ ๐๐ผ๐๐ป๐ฐ๐ฒ: Provide just enough bounce to mimic outdoor tire feel, reducing knee/hip pressure for 3-hour endurance ridesโsay goodbye to mid-ride discomfort ๐๐๐ป๐ฎ๐บ๐ถ๐ฐ ๐ฅ๐ผ๐ฐ๐ธ๐ถ๐ป๐ด ๐ณ๐ผ๐ฟ ๐๐ผ๐ฟ๐ฒ & ๐๐ฎ๐น๐ฎ๐ป๐ฐ๐ฒ๏ผA subtle 10ยฐ rocking motion lets you shift naturally, engaging core muscles and improving balance โturn stiff trainer sessions into fluid, joint-friendly workouts (great for Zwift or intervals!) ๐ง๐ผ๐ผ๐น-๐๐ถ๐ ๐๐ป๐ฐ๐น๐๐ฑ๐ฒ๐ฑ: Kit includes a mallet and clear instructions for hassle-installationโno guesswork needed. Removable tennis balls allow quick when worn ๐ช๐ต๐ ๐ฑ๐ผ ๐๐ต๐ฒ ๐ฎ๐ฑ๐ฎ๐ฝ๐๐ฒ๐ฟ ๐ฎ๐ป๐ฑ ๐ฟ๐ผ๐ฐ๐ธ๐ฒ๐ฟ ๐ณ๐ฒ๐ฒ๐ ๐ณ๐ถ๐ ๐๐ผ ๐๐ถ๐ด๐ต๐๐น๐? โโ The snug fit prevents dislodging during intense workouts - critical for safety. We include a mallet to easily tap adapters on (for install) and off (for removal). No struggle, just secure & simple. ๐ฆ๐ฎ๐๐ถ๐๐ณ๐ฎ๐ฐ๐๐ถ๐ผ๐ป ๐ฃ๐ฟ๐ผ๐บ๐ถ๐๐ฒ: Questions? Issues? our team via your order page. We provide 12 months .Thank you for your trust and purchase!