ITEM NAME:End Cap Aluminum Block Base Plate Aluminum Sheet Square 20X20X3Mm V8E5 End Cap Aluminum Block Base Plate Aluminum Sheet Square 20X20X3Mm V8E5 Connect the bottom of the V-Slot linear guide; end cap base has recessed center holes for inserting self-tapping screws; Use multiples to close the wider V-groove linear guide. Surface treatment: smooth polishing Product weight: 5g End Cap backplane colour:Black Material:metal Size: 20 x 20mm Thickness: 3 mm Package Contents: 1 * End Cap Backplane Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.