If you need a replacement chainring bolt set for your Ultegra 6800 crankset, look no further. The sculpted design with rear bolt placement of the 6800 crankset is a signature feature, with caps designed as shrouds on the 46 tooth outer-ring to match the sculpted final aesthetic of the larger outer rings. Shimano packages the 10mm bolts and replacement caps together. This kit comes in a set of 8 (4 10mm bolts and 4 caps) and is a genuine Shimano kit. The caps are receivers required when you use a 46 tooth ring, as with the 46-36 cyclocross crank or when replacing a larger ring with a 46.