Easy Expansion: The Adjustable Extension Cymbal Arm enables you to easily expand your drum set with additional cymbals. Adjustable Arm: With its cymbal ratchet, this cymbal attachment arm clamp allows you to adjust the height and angle of your cymbals for maximum comfort and playability. Durable Material: Drum stand cymbal clip is made of metal material is built to withstand the rigors of regular use and last for years to come. Easy to Install: The Cymbal Extension Mount Clamp makes it easy to attach the extension cymbal arm securely to your drum set, allowing you to start playing right away. Univisal: This Drum Kits Extension Clamp is compatible for most standard drum set. Size Chart: Cymbal Arm:45cmx11cm/17.72inchx4.33inch drum key:5cmx3.8cm/1.97inchx1.50inch Package Includes: 1 Drum extension clip 1drum key Note: Please allow slightly errors due to manual measurement and different monitors.