2 set tool:1 set Encoder Mounting Bracket & 1 x Encoder wheel Color: Green & Silver Can give E6B2 OVW TRD encoder, such as can be fixed on the market through 20 type, diameter, 38, 40 of the encoder Optical axis comes with M8 screw holes, you can add the length of the shaft according to your actual use Usage: Industrial DIY Supplies: Metalworking Standard or Nonstandard: Nonstandard Inner hole size: 6mm Perimeter: 200mm 1.Use with rotary encoder to measure velocity and position 2.It have high resolution Structure:Single-side Bracket Material:Aluminum allo+ polyurethane Overall Size:14x9.4x4.8cm /5.51x3.70x1.88 Inch( L x W x H) Combination Package Package Contents: 1 x Encoder Mounting Bracket 3 x fixing screws 2 x locking screw 1 x Encoder wheel Encoder wheel Package include: 1* Encoder wheel Mounting Bracket Package Contents: 1 * Encoder Mounting Bracket 3 * fixing screws 2 * locking screw 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.