Materials: cabinet profile is grey powdercoated, drawer profile cold rolled steel uncoated for welding Features: Delrin* encased steel roller bearings Standard Hole/Slot for weld jig alignment Specifications: Standard Mounting Tab system allows for quick installation and flexibility in drawer slide model selection cabinet profile is powdercoated, drawer profile is uncoated (raw) to allow welding by installer. openings for the mounting tabs are 12mm x 12mm front and rear openings are on the same level mounting strips can be identical front, back, left and right standard thickness for the mounting hat is 1.5mm (16 gauge) steel with option for 1.9mm (14 gauge) steel available double-sided captive profile self-closing