Auto-retractable pen-style cutter includes one replaceable Slice ceramic blade ; Patented handle with rubberized slider button limits the amount of exposed ceramic-blade to further reduce injuries ; Automatically retracts back into housing for added safety when slider button is released ; Patented high-tech double-sided #S3 Slice ceramic blade SKU#10404 designed to reduce injuries by incorporating a safer rounded-tip ; Sharpness level up to 10x longer than steel ; Measures 135 mm L x 18 mm diameter (5.3 in L x 0.75 in diameter) ; Auto-retractable for extra safety ; Includes one double-sided ceramic blade ; Stays sharp up to 10X longer than steel ; Simple no-tool blade change ; Non-conductive, anti-magnetic blade ; Never rusts, chemically inert blade ; Replacement ceramic blade #S3 ; Less blade changes = < money + less injuries