The AT-HS4BK is a universal ½"-mount headshell designed for use with straight 4-pin tonearms. The AT-HS4BK features an ultra-lightweight (8.5 g) aluminum die-cast body to keep vibration to a minimum and a finger lift to enable precise stylus placement. The headshell is also equipped with color-coded lead wires and comes with mounting screws. 

Specifications 
Material: Aluminum 
Connector: Aluminum 
Weight: 8.5 g (0.3 oz), including lead wire 
Dimensions: 12.5 mm (0.5") H × 20.7 mm (0.8") W × 54.0 mm (2.1") D 
Accessories: Installation screws (10 mm × 2, 8 mm × 2), nuts x 2, plastic washers x 2