15 to 20mm for Garmin Forerunner 235/735/220/230/620 Watch Band Adapter Steel
15 to 20mm Steel Watch Band Adapter for Garmin Forerunner 235/735/220/230/620. Make Garmin Forerunner 235 / 735 adapters converts any 20mm into a compatible watch strap. Compatibility: Garmin Forerunner 235/735/220/230/620.