The NSM1047P is a replacement plunger adapter set for the NSM1047 Compact Compression Tool (sold separately). The plunger adapters are constructed of hardened steel, so we don’t expect you’ll need replacements due to breakage. However, because the plunger adapters are removable from the compression tool to be interchanged to suit compression of different types of connectors, they are possible to misplace! There’s no need to completely replace the NSM1047 tool when you can just replace the plunger adapters. This replacement set has the (3) F, BNC, and RCA compression heads needed for easy termination – all with a single tool!