CST1000-1 Accessories (45pcs connectors and 60pcs seals) It can cover the 99% pressure instruments. M20x1.5 standard stainless steel male threads to adapt CST1000-3 Accessories (48pcs connectors and 60pcs seals) It can cover the 99.9% pressure instruments. M20x1.5 standard stainless steel male threads to adapt