The EM Series code is Single Sided Key is for EBERHARD HUDSON applications. This listing is on a Y14 Curtis or ILCO O1122AR Key Blank. We have keys for PROTECH Tool Boxes. Keys for PROTECH Tractor Trailer HASP Style Steel Tool Box. PROTECH replacement key for Aluminum and Steel toolbox. Keys for PROTECH Inbed toolbox. Replacement keys for PROTECH Drop Door Side Rail Boxes and the Cross Body PROTECH toolbox as well as for PROTECH Wheel Well Boxes. SAVE 15% Order 2 or more keys and then use the code LOSTAKEY in the discount code redemption box during checkout.