The Sachtler aktiv 75 mm Head-to-Slider Adaptor mounts aktiv 75 mm fluid heads with SpeedSwap base onto sliders or other equipment with a 3/8-inch mounting stud. The adaptor measures 35 mm in height and 64 mm in diameter, and weighs 0.137 kg. It includes a stud for sliders with female fittings; the stud can be removed for sliders with male fittings. It is not compatible with sliders using a 1/4-inch to 3/8-inch thread adaptor.