Tags: HOYT SCTR CDM Module Set* DOES NOT INCLUDE CAMS OR MOD FEET To suite the new Hoyt Concept X 37 / 40 / FX Series Allows 1/2" adjustments Concept X Axle to Axle 34 FX 37 40 Hoyt CDM Module 24.5-27.5" 26-29" 27-30" SCTR Cam System The SCTR Cam system combines the best of Hoyt Cam & 1/2 technology with modern Hoyt HB cam systems to deliver a shooting system that enhances the shooter experience in every way. Borrowing qualities from one of our most winning SVX cam systems, the SCTR cam system takes those qualities and improves performance by delivering fine-tuned "feel" adjustments that shooters can easily perform. A larger, stronger, more rigid 1/4" threaded axle system stiffens the overall system, enhances cam bearing life, and works in tandem with TXL limbs to deliver maximum performance and efficiency while also delivering ultimate stability. It also happens to be quieter and shoots with far less vibration. New CDM Mods Maximum efficiency across a rotating, draw-length adjustable module.