Double Bass Pedal, Double Chain Drive Bass Drum Pedal, 2 Two-Sided Beater Head Kick Bass Drum Pedal, Non-Slip Footplate, Kick pedal for Beginner and Pro Drummers. Double Chain Drive: Cam design, double chain drive response is fast and powerful Double-sided Hammer Head: Double-sided strike, providing a variety of tones and percussion frequencies, with a clear drum feel, suitable for a variety of music styles Spring Tension System: Effortless hitting, quick rebound, adjustable tension. Flexible and adjustable connecting rod, easy to disassemble. Durable & Stable: Professional non-slip base plate and large frame design provide excellent stability and durability during practice and performance Products Include: 2Allen wrench, 1Drum key, 1Double bass drum pedal. As our valued customer, we will do our best to make sure the product you receive arrives to you on time and as expected.