[2 Pack] HGR20/HGH20 200mm/ 7-7/8'' Linear Sliding Rail Guide with 4 HGH20CA Linear Bearing Sliding Carriage Block for 3D Printer, CNC Machine and Routers (200mm, HGR20/HGH20) June_2023_update Web recommends using tape that

Web recommends using tape that is 5mm wider than your inner rim width

Tolerance: The tolerances of all the dimensions are +/-0

USB drive For cables

3 Charging Ways-- No electricity

[2 Pack] HGR20/HGH20 200mm/ 7-7/8'' Linear Sliding Rail Guide with 4 HGH20CA Linear Bearing Sliding Carriage Block for 3D Printer, CNC Machine and Routers (200mm, HGR20/HGH20) June_2023_update Web recommends using tape that[2 Pack] HGR20 HGH20 200mm 7 7 8'' Linear Sliding Rail Guide with 4 HGH20CA Linear Bearing Sliding Carriage Block for 3D Printer, CNC Machine and Routers (200mm, HGR20 HGH20) Packing: 2 x 200mm 7 7 8'' HGR20 HGH20 Rail Guides and 4xHGH20CA Sliding Carriage Blocks Product Features Packing: 2 x 200mm 7 7 8'' HGR20 HGH20 Rail Guide and 4xHGH20CA Sliding Carriage Blocks Material: Steel Bearing Steel Size: 200mm 7. 875 inch 7 7 8'' long, tolerance 0. 5mm