This SRAM Rival DUB non-drive crank arm is the perfect addition to your bicycle. With a width of 175mm, it is designed for optimal performance and comfort. The black color and sleek design make it a stylish choice for any cyclist. The brand SRAM is known for its quality and reliability, making this crank arm a great investment for your cycling needs. This crank arm was replaced with a power meter--which is why it is being sold (it was removed from a 2024 Specialized Crux). As the pictures shows, the non-drive side arm is in excellent addition. Only the left crank arm, with its locking ring shown in the picture, is included. There are no spacers included with this purchase.