Without encoder Need to purchase separately Hign-concerned Chemical: None Type:Power Tool Parts Encoder mounting bracket, Polyurethane meter wheel+spring bracket ly upgraded and reinforced, The spring not loosen after prolonged use Color: As Shown Material: Aluminum Alloy Package Contents: 1 * 40mm Encoder bracket Only the above package content, other products are not included. Note: Light reflection 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.