The New Elevn Aero Quick Release Seat Post clamp is made exclusively for the Chase ACT 1.0, RSP 3.0 and Element Frames with Aero Seat Tube.
25.4mm (Mini, Junior and Expert size frames)
27.2mm (Expert XL and above sized frames)
Weights : 37g (25.4) 39g (27.2)
Black, White, Polished, Red, and Blue