Here is a set of the extremely popular strawberry pearl inserts in two different styles of Bullet heads - The Koya Bullet and the Regular Bullet.
The Koya Bullet is a double tapered bullet (tapered on both ends) that allows for the lure's action to not fish straight like a standard bullet. Good weight on this head to keep the lure down in the water. Comes in both 4-hole jetted & non-jetted styles.
The Standard Bullet is a single tapered bullet that fishes more straight. A lot of weight put to these bullets that keeps the lure down in the water. Comes in both 4-hole jetted and non-jetted versions as well.