Artisan Power P-56517: D-Shape 2-Wire Headset for Motorola CLS1410 and CLS1100 2-Way Radios: PMLN5001, HKLN4599, 56517 Compatible with CLS, DLR, XV, XU, DTR, RDV, RDU, RMU, RMM, RMV, M-series and AX series radio series. Replaces OEM Part Number 56517, HKLN4599 and PMLN5001. Large Wrap Around Ear Piece, 2-Wire with Shirt Clip and "Push-To-Talk" Button. D-Shape Ear Piece 2-Wire Headset for the Motorola CLS1410 and CLS1100. Manufactured by Artisan Power, a leader in high quality replacement products.