FRLs are available in metallic and composite version to cover most of the pneumatic tool needs.
Metallic FRLs are available in 1⁄4”, 1/2”, 3⁄4”, BSP or NPT, 2 or 3 stage units or individual units.
Composite FRLs are available in 1⁄4” 3/8″, 1/2″, BSP or NPT 2 stage units.