Lekkie BLING RING chainrings are the most sought after accessory for the Bafang BBSHD mid-drive systems. All aspects of performance and durability were considered during the design process with the utmost emphasis on quality and finish. As it is the only front chainring, a narrow/wide tooth pattern is used to eliminate chain derailment and increase durability by thickening the teeth. Made of anodized 7075 T6 hardened aluminum it is super strong, durable and ultra-light, weighing only a few ounces instead of the heavy 1.3lbs of the original steel chainring. And they look great!