PRODUCT DESCRIPTIONLamp holder accepting all sizes of light sources from PAR20 to PAR38. A unique flanged,retractable shroud extends to cover the neck of any light source for a clean appearance thatis uncommon to most lamp holders.Features• Retractable extension hides lamp neck and screw shell• Ultra-clean appearance• Heat resistant Teflon coated wire lead• Low profile mounting/adjustment arm• High-strength stainless steel electrical contacts• One or two circuit track capable• Available in J-Style and L-Style