... production progress, the shaft including:SF (normal standard shaft); SFC (chrome plating standard shaft); SFT( drilled hole shaft); SFCT(chrome ... cylinder linear shaft. cylinderlinear rail series: including Dia. size 6mm, 8mm, 10mm, 12mm, 13mm, 15mm,16mm, 20mm,25mm,28mm, 30mm, 32mm ... , we produce cold rolled ball screw, linear guide, cylinder linear rail. We are sole TBI brand certificate holder ...