The Heritage Brass Flat Bathroom Turn & Release Antique Brass is designed to be used in conjunction with the M.Marcus Bauhaus and Delta door handles on flat roses. The release can be easily opened from the outside of the door, should there be any emergencies. The turn & release has a 50mm diameter. Other Variations There are other variations of this turn & release available in different finishes - these can be found as separate products in the Bathroom Turns category.