The Ripley Cablematic 31520 (Blade Model CB-117K) is the genuine replacement coring bit kit for the CST750 combination coring, sheath-stripping, and chamfering tool. It is designed specifically for use with 0.750" hardline coaxial cable and provides the spiral-fluted, heat-treated cutting action needed to cleanly remove the foam dielectric core from the cable end, exposing the center conductor for connector termination. This is the correct OEM replacement for cable TV and broadband infrastructure technicians who need to restore their CST750 to factory performance without replacing the entire tool.

The 31520 coring bit kit is compatible with both CST750 configurations: the standard model (Ripley Part #32110, built-in 3/8" drill adapter) and the ratchet model (Ripley Part #32150, separate 3/8" drill adapter). Both versions use the same Guide Sleeve (Part #29111) and accept this same coring bit assembly. The CST750 is rated for CommScope P1 and P3 Cable Guard cable, Times Fiber T4, T6, and T10 cable, and Alcatel Cable Benelux ACE/ACW cable — all of which this replacement blade supports.

Note that the replacement sheath-cutting blade for CST series tools is a separate part (Part #14907) and is not included in this kit. For technicians working across multiple cable diameters, Ripley offers equivalent coring bit kits for the CST500 (CB-115K / Part #31320) and CST875 (CB-118K / Part #31620) tools in the same product line.

• OEM replacement coring bit kit (CB-117K) for the Ripley Cablematic CST750 0.750" hardline coaxial coring tool
• Spiral-fluted, heat-treated steel construction for clean, consistent dielectric core removal
• Compatible with CST750 standard model (#32110) and CST750 ratchet model (#32150)
• Supports CommScope P1/P3 Cable Guard, Times Fiber T4/T6/T10, and Alcatel ACE/ACW hardline coaxial cables
• Restores tool to factory coring performance — eliminates need to replace the full CST750 assembly
• Works with the CST750's manual or drill-driven (3/8" drill adapter) operation modes