The Clean-22 ammunition features a polymer bullet coating that greatly reduces lead fouling in the barrel without leaving residue, cuts lead buildup in suppressors 60 to 80 percent and is a lead round nose bullet. These containers have 400 rounds per container.
Specifications:

Caliber	22 LR
Bullet Type	Lead Round Nose (LRN)
Bullet Weight	40 gr
Muzzle Energy	135 ft lbs
Muzzle Velocity	1235 fps
Casing Material	Brass
Sub Brand
Rounds Per Box	400
Boxes Per Case	8
Bullet Coating	Polymer