SPSL is state-of-the-art spade lug which creates an aura of elegance. After repeated listening test, we employed RoHS compliant pure brass for the base material and a combination of silver + platinum plating. The main body is trimmed from a phosphor bronze bar of 15mm in diameter by precision CNC machining and is finished by mechanical barreling and hand polishing piece by piece. The highly-rigid 5mm stainless screw is used for the 4mm cable penetration part. This infills inside space between the body and the screw. The blue screws, made of stainless with quench hardening treatment, are highly-rigid and emphasize the beauty of SPSL.