Saddle Clamp Only - Only Compatible with Hydro-Gains® and Hydro-Gains Toolbox®

Berk Composites Lupina 150 Padded Saddle - Carbon Rails Bi Saddle - Full Carbon - Carbon Rails/Carbon Race Frame (New version)-rear double screw holes / Hurricane Pro 3D saddle Bi Saddle - Full Carbon - Carbon Rails/Carbon Underside (Old version) No Screw Holes on rear of saddle BiSaddle - Carbon Rails Oval-(EXT Stealth/Bonneville Distance/EXT Sprint/SRT) (No Carbon Under saddle) BiSaddle - Chromoly/Titanium Rails (Saint/Hurricane/EXT Stealth/Bonneville Distance/EXT Sprint/SRT) Bontrager Aeolus Comp / Elite Bontrager Hilo Comp & Pro Carbon Rail / Metal Rail - Carbon Rail Bontrager Hilo RXL Bontrager Verse Pro (Carbon Rails) Cadex Boost saddle Cervelo Airform TT Cobb Saddle (Metal Rails) only - this is not a JCobb Dash Aero Seat Post Combo - EZ Carbon Saddle Attachment Dash Stage 3 Ergon SR Tri Mid Front - Metal Rails Fabric TT Saddle Fizik Transiro Aeris / ALL the R Range /Fizik Transiro Aeris / ALL the R Range /Arione Adaptive R1 / Not Arione R1 / Short - Long / 3D / Carbon - Metal Rails Fizik Tritone TT / Fizik Mistica Fizik Vento Argo R1 adaptive Carbon Rail 140/150/160 Fizik Vento Argo R5 - Metal rail GebioMized Stride - Carbon/ Metal Rails Next Level Fit Giant Contact SL TRI - Metal Rail Infinity Saddle - Adventure A1X / EX2 / Elite ISM PL 1.0 / PL 1.1 ISM PM 2.0 (Metal Rail) (Short Nose Only) ISM PN 1.0 - 1.1 (Not White Saddle Version) ISM PN 3.0 - CARBON RAIL VERSION ISM PN 3.0 / 3.1 /PN 4.0 / 4.1 - Metal Rail Version ISM PR 1.0 / PR 2.0 / PR 3.0 ISM PS 1.0 / 1.1 / PS 2.0 / PS 2.1 / Adamo-Not Island Version Jacob 5 / Cob 55 /Johannes / Delta P / Type 5 / Delta 38 - 3 screw holes in base of saddle Pinarello Aircross Most Posedla - Carbon Rail Pro/Ultra - (Short Nose Only) Profile Design Vertex 80 Saddle Black Prologo Dimension (Carbon Rails Versions) Prologo Dimension (METAL RAILS - ALL VARIATIONS OF DIMENSIONS) NDR / Tri Tirox Prologo M5 Scratch / R4 Nargo (Carbon Rails) Prologo M5 Scratch / R4 Nargo (Metal Rails) Prologo T Gale - Carbon Rails Prologo T Gale - Metal Rails Prologo Zero Tri Selle Italia - Boost SLR TM / 3D Superflow (Metal Rail) Selle Italia - Endurance Superflow Novus Selle Italia Iron Evo Selle Italia Novus Boost Evo Carbonio Superflow Selle Italia Novus Boost Evo Superflow Selle Italia Watt Superflow (BLACK METAL RAILS ONLY) Selle Italia Watt Superflow (Carbon Rails) Carbonio Selle Italia Watt Superflow (SLIVER METAL RAILS ONLY) 3D Ti316 / Magnesium Selle San Marco Shortfit 2.0 Selle SMP - All Versions "they use the same rail" Shimano Pro Aerofuel (Carbon Rail) EZ48 Shimano Pro Stealth Performance Saddle (METAL RAILS) EZ55 Shimano Pro Stealth Team Saddle - (CARBON RAIL) EZ55 Shimano Pro TSA 1.2 (Metal Rail) EZ47 Specialized Alias 155mm Specialized Power Arc Expert 130/143/155/168 Specialized Power Comp 130/143/155/168 Specialized Power Mirror - Metal rails Specialized Sitero - Expert Gel Tri body Geometry Carbon / metals rails Specialized Sitero - Metal Rails 130/155mm Specialized S-Works Power Evo with Mirror - Carbon Rails Specialized S-Works Power Mirror- Carbon Rails SQLab 613R Tri Saddle (Carbon/Metal) Syncros Belcarra V Range / belcarra v 1.0 / 1.5 TRi Carbon/ Metal Rails Syncros Belcarra V2.0 - Metal Rails / Carbon Rails (Pre-Order 31st August) Trek Aeolus Pro AirLoom (Carbon Rails) 145/155 Universal Metal Rail Mount Velo Senso TRI - Metal Rails