Bicycle MTB Seat Bottle Holder Cage Racket Double Water Bottle Mount Extension Rack Holder Cage Adapter for Bike Back Saddle

Features: 1.This bracket adopts good quality material, anti-rust, high     strength, wear-resistant, durable.  2.Comes with necessary fittings, only need to fix the bracket on     the back of saddle, easy to install.  3.This bracket offers two independent bar for mounting bottle     holder with stability and convenience.  4.Can hold two water bottles at the same time, good for long     time cycling. 5.It's used in the saddle, which is space-saving     and won't bother your cycling.  Specification: Material: Steel + Plastic Color: Black Size: Approx. 8 * 5.8 * 8mm / 3.15 * 2.28 * 3.15inch Weight: Approx. 140g Package List: 1 x Bicycle Bottle Holder Adapter 1 x Set of Fittings Water bottles are not included.