ATLAS Classic – LAC14FP Classic Single Bass Pedal Wire Frame baseFor lightweight and foldability. Tri-Felt Red Stripe beaterMade of medium-density felt for punchy attack and full sound, with lightweight aluminum hub, stainless steel shaft, and laser-engraved Lightweight Aluminum cam and beater clampFor reduced rotation weight and improved stroke. Stainless-Steel Drive ShaftMachine tooled for precise rotation and easy adjustability. Bearing-Pivotal Spring AdjustmentBall bearings support for both ends of the spring decreases resistance in each stroke for maximum speed and increased spring life. SpurLok Heel Plate AnchorsAdded stability and grip to insure solid, slip-free performance located directly under the heel plate for improved stability.