There are many blood transmitted diseases – Hepatitis B, Hepatitis C, HIV and others. People involved in sport activity always have injuries. Hands are most vulnerable parts, because of soft and thin skin, heavy impacts from hitting, weights lifting and other. Blood can be found on palms, fingers and forearms. If persons use the same tool, blood can be transmitted through a device grip. Bullet Stroke grip, like other sport devices, can be contaminated by blood. Not always comfortable to use gloves. A grip strap of a device can be disinfected, but the best way is to use a device personally or change an over grip from person to person. In many situations, ordinary hygiene instructions can prevent disaster.