The Roto-Spin tool strips the jacket of electric or communication cables and facilitates and speeds up cable preparation for electrical or fiber-optic connections. The tool features a swiveling blade to ring and straight-cut cable jackets in one easy operation. A foolproof system accurately sets blade penetration using a rotary cam that has 16 depth-of-cut settings to precisely set blade penetration. Cable-stripping length is set with a sliding cable stop. The tool allows easy-blade replacement with blade storage provided in the cable stop. Seatek Co. Inc.