T4E P2P Powder Balls - 10 ct Tube Blue/White. The powder is enclosed in a blue and white shell that is made to burst upon impact creating a cloud of powder. A great reactive product for confirmation of rounds on target. The hardness of the surface the powder ball impacts as well as distance will affect performance. Practice to engage threats up to 20 feet. Specifications for T4E P2P Powder Balls - 10 ct Tube: Manufacturer: T4E Color: Blue/White Projectile Caliber: .50 Caliber Package Contents: T4E P2P Powder Balls - 10 ct Tube T4E 2292302: P2P Powder Balls - 10 ct Tube Blue/White