Flex Industrial Elbow Pads, One Size, Nylon Rubber Neoprene Foam, Black ORS NASCO Multi purpose lubricant stops sticking Multi purpose lubricant stops sticking Precision tools made of rust proof aluminum and anodized for lasting protection The arms are precisely aligned with spring tension joints to guarantee accuracy and rigidity The holder accommodates flat or round soapstone and pencils All are a folding type design Soft rubber cap is skid resistant and provides protection and flexibility Compression recovery 1 2 in neoprene foam padding provides firm consistent support without bottoming out Finished brushed tricot liner wicks away moisture and keeps out dirt and debris Secured with four brass grommets