Drive

• optimal torque transmission
• tight, snug fit and fast centering
• no tumbling motion
• no "come out" effect of the bit

Head Shapes

Countersunk Head

• discreet apperance

Raised Countersunk Head

• discreet apperance
• easy and clean countersinking of the head

Pan Head

• more surface pressure by a large contact area
• pleasant apperance due to rounded form

Hexagon Drive

• inhibits unscrewing of the screw
• big contact surface
• high clamping pressure

Washer Head

• wide contat surface
• high clamping pressure