Promax TX V-Brake MTB Linear Pull Brake Front and Rear Black Set Model=OneLoc Wristband Black - Silicone Primary

Wristband Black - Silicone Primary Color Black Watch Color Black Connectivity ANT+ BT SMART Customizable Screen Yes External Sensor Compatibility Speed/Cadence/HR Battery Type Lithium Cobalt Oxide GPS Yes Touchscreen No Heart Rate Monitor Yes Solar Charging No

Material: silicone foam grip on a rigid plastic liner

For use with XPLR 1x 13-speed rear derailleurs

8mm spacer (included) for use with Shimano/SRAM 8-11sp HG mountain cassettes

Promax TX V-Brake MTB Linear Pull Brake Front and Rear Black Set Model=OneLoc Wristband Black - Silicone Primaryalloy, with Shimano spring system DIN approved front and rear 110mm, silver OEM TECH SPECS Brake Material Aluminum Pad Type Non cartridge Brake Type V Brake Position Front and Rear Primary Color Black