Makes fast work of dirty chambers. CHR Rifle/Pistol Rod (8-32 thread), CHS Shotgun Rod, (5/16"-27) female thread. CHR-50 Rod – fits .50 caliber Browning Machine Gun, (5/16"-27) female thread. Mfg: Dewey SPECS: Handle 11/2" (2.9cm) diameter. Brass rod, CHR and CHS – 91/2" (24cm) long. CHR-50 – 17" (43cm) long. Use 10 gauge shotgun brushes for .50 BMG. Chamber Rods have fixed Non-Rotating handles.