Gibraltar 4711ST-DB Strap Drive Double Pedal The Gibraltar Strap Drive Single Bass Drum Pedal uses a Kevlar non-stretch strap drive system for solid, dependable action. Features a new "G" style pedal board design dual surface beater, adjustable spring tension, and a lightweight, sturdy frame. Strap Drive Double Pedal Kevlar non-stretch strap drive system for solid, dependable action New “G” style pedal board design Dual surface beater Adjustable spring tension Lightweight, sturdy frame