The Canare CB22 Tri-K Pro Dust Boot is specially designed for the CCM4-PK Triaxial Connectors. Features: Long lasting performance - superior design Crimp with TC-1 crimp tool & TCD-316C die Secure push-lock mechanism Operating frequency up to 2.0 GHz Use with: Belden 9267, 1856A, 1857A; Gepco LVT 61859, VT 61859