Compatible with the below Bore Cap:

- HTTCTC - RX4 + Large / RX4 SH Large / Mono M4 Large HOPE X2 / E4 / V4 / M4 Large
- HTTCTB - RX4 + Small / RX4 SR Large / RX4 SH small / Mono M4 Small HOPE Mono 6 Large / Mono M4 Small
- HTTCTA - RX4 SR Small / Mono 6 TI Small HOPE Mono 6 TI Small
- HTTCTE - Mono V2 / Trial HOPE Moto V2 / Mini Trial
- HTTCTD - Mono Mini HOPE Mono Mini / Tech V2