Replacement rubber grommets for internal routing on Polygon and Marin models. Sold per type/piece. Type A Type B Type C Type D Type E Type F Type G Type H no hole double no hole 2017-2020 Polygon/Marin/BOA Internal Routing - Gear Cable ✓ 2017-2020 Polygon/Marin/BOA Internal Routing - Brake Cable ✓ ✓ 2020-2021 Polygon/Marin Internal Routing - Gear Cable ✓ ✓ ✓ 2020-2021 Polygon/Marin Internal Routing - Brake Cable ✓ ✓ ✓ 2020-2021 Marin Internal Routing Carbon Frames - Gear Cable ✓ Type A: for gear cable, compatible models: 2017-2024 Polygon Siskiu D, T series / Trid HT / ZZ, Path, Strattos 2017-2022 Rift Zone, Hawk Hill, Marin B17 2017-2020 BOA Premium MTB Type B: for brake cable, compatible models: 2017-2024 Polygon Siskiu D, T series / Trid HT / ZZ, Path, Strattos 2017-2023 Rift Zone, Hawk Hill, Marin B17 2017-2020 BOA Premium MTB Type C: for brake cable, compatible models: 2017-2023 Polygon/Marin 2021-2024 Marin Rift Zone Carbon Type D: for gear and brake cable, compatible models: 2021-2024 Polygon Siskiu D, T series / Trid HT / ZZ, Path, Strattos 2021-2023 Rift Zone (Aluminum) 2021-2024 Rift Zone (Carbon) Hawk Hill, Alpine Trail (aluminum frames only) Type E: for gear cable, compatible models: 2021-2024 Polygon Siskiu D, T series / Trid HT / ZZ, Path, Strattos 2021-2022 Rift Zone (Aluminum) 2021-2024 Rift Zone (Carbon), Hawk Hill, Alpine Trail (aluminum frames only) Type F: for brake cable, compatible models: 2021-2023 Polygon/Marin (aluminum frames only) Type G: Gear grommet kit 2021-2024 Alpine Trail Carbon 2020-2024 Marin Rift Zone Carbon 2020-2024 Headlands Type H: for gear cable, compatible models: 2021 Polygon/Marin (aluminum frames only)