Lekkie BLING RING chainrings are the most sought-after accessory for the Bafang BBS02 mid-drive systems. All aspects of performance and durability were considered during the design process, emphasizing quality and finish. As the only front chain ring, a narrow/wide tooth pattern eliminates chain derailment and increases 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 1.3 lbs of the original steel chainring. And they look great!