Sealey SSP21X Coalescent Filter Wall mounting filter designed to squeeze out particulate and moisture from the air supply. 1/2"BSP Female fitting. SSP21X Features Wall mounting filter designed to squeeze out particulate and moisture from the air supply 1/2"BSP Female fitting SSP21X Specification Model No SSP21X Brand: Sealey Nett Weight: 0.54kg What is included: 1 x Sealey SSP21X Coalescent Filter