Made of ABS plastic, strong and durable, easy to install.Package included 3 Sizes hair clipper guide combs: 32mm 38mm 51mm, to meet your different needsEach guide can glide through hair smoothly and quickly, saving time while using.Easy to install on and remove from clippers. You just need to attach the comb to the bottom of the clipper's blade and pull up to get it fixed. It is sturdily-built, can easily and smoothly through thick hair.It is a good choice for trimming hair and beard, Fits standard adjustable clipper blades, necessary tool for haircutting and hairdressing.Specification:Type: Limit CombsMaterial: ABSSizes: 32mm 38mm 51mm1# 9.8 X 5 X 3.3cm/3.9 x 2 x 1.3 inch2# 10.9 X 5 X 4.2cm/4.3 x 2 x 1.7 inch3# 11.7 X 5.1 X 5.1cm/4.6 x 2 x 2 inchColor: Gray Black Green BluePackage Includes:3 Pieces Hair Clipper Guide CombsNote:1.Please allow 1~3 cm error due to manual measurement, thanks.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.