Mapex 400 Series Double Bass Drum Pedal. 400 Series Double Bass Drum Pedal. Used – Customer Return with Original Packaging. Whether it’s the single or double-pedal version, the P410 gets beginners off on the right foot. The single-chain drive mechanism provides extended durability compared to most beginner pedals. Dual-Tone ABS Reversible Beater. We are authorized dealers for all these brands. We operate a 30-day return period. A 10% re-stock is more likely if the unit comes back in mint condition. Also, Items which we do not normally stock i. “Special Orders”, discontinued products, close-outs, used products, etc. We strongly suggest that you check your order after receiving it to be sure that it is in proper working order.