... . TBI brand qualtiy guantee. Linear guide shaft TBI brand Dia. 20mm supplied by SNE Application: 1.Optical axis is widely used ... drilled and tapped,radial holes drilled and tapped,reduced shaft diameter etc.we can machining for you.And these special machining ... : including Dia. size 6mm, 8mm, 10mm, 12mm, 13mm, 15mm,16mm, 20mm,25mm,28mm, 30mm, 32mm, 35mm, 40mm, 45mm, 50mm, 60mm. ( image ...