Competition Grade Wooden Crossfit Gymnastics Workout Rings for Dips, Tucks and Pull Ups Competition Grade Wooden Crossfit Gymnastics Workout Rings for Dips, Tucks and Pull Ups Betula (Yellow birch) Hardwood rings 23cm*32mm with 18 foot long nylon straps Ultra durable extra wide 3.8cm nylon numbered straps with durable metal buckles for easy mounting and adjusting Unparalleled construction and quality, ships from USA Hang from playsets, pull up bars, trees, beams and crossfit rigs