Kaw Valley Precision Plan B Bravo Mount 1.375x24 Black Small. Each mount is made from 17-4 H900 stainless steel and finished with a black nitride coating. With a 1.375inx24 thread pattern mount is designed to convert HUB compatible suppressors to a Plan B mounting system. Specifications for Kaw Valley Precision Plan B Bravo Mount: Manufacturer: Kaw Valley Precision Fabric/Material: Stainless Steel Color: Black Finish: Nitride Threads per Inch: 1.375x24 Weight: 1.8 oz Package Contents: Kaw Valley Precision Plan B Bravo Mount Kaw Valley Precision KVP-PLANB-BRAVO-01: Plan B Bravo Mount 1.375x24 Black Small