Furnished open to allow the clip to be snapped over wiring or tube, then closed with the bolt at assembly. Contoured to minimize distortion during clamping. Round top hole. CWV feature round lower hole and COV feature slotted lower hole. Part numbers with an arrow (?) are LIGHT-DUTY and have two round holes. All other parts are MEDIUM-DUTY and have one round hole and one slotted hole. Part numbers with an asterisk (*) are produced from CRCQ steel, zinc plated.