[20pcs / Pack] 300mm/11.81inch, Diameter 8mm Linear Motion Rod Shaft Guide Set,4 x Linear Motion Rod Shaft Guide,8pcs Linear Slide Blocks and 8pcs SK8 Rod Rail Support for 3D Printer and DIY CNC Parts

Description ◆Packing:4x (Diameter 8mm) 300mm Linear Motion Rod Shaft Guide / steel,◆Tolerance ± 0.5mm ◆Packing:8xSCS8UU8 Linear Slide Blocks / aluminium alloy ◆Packing:8xSK8 Rod Rail Support / aluminium alloy ◆Suitable for 3D printer , CNC machine,Routers,automatic machine,molding machine Product information Package Dimensions ‎12.01 x 2.83 x 2.48 inches Item Weight ‎2.44 pounds