The world's lightest .177 caliber pellet, only 6.5 grains! This is to help boost the velocities in moderate powered airguns, and for those needs when the highest velocity is needed. Due to the extremely light weight, this pellet may not shoot accurately in the ultra-high powered air rifles as it can come out faster than the speed of sound and tumble in flight. A great choice for the Marksman, Crosman, or Daisy airguns on the market. The Laser is one of the standard pellets we use to measure velocity.